1 files changed, 2863 insertions, 2919 deletions

diff --git a/src/burn/engine/userexperience.cpp b/src/burn/engine/userexperience.cpp
index 372ca901..99561f35 100644
--- a/src/burn/engine/userexperience.cpp
+++ b/src/burn/engine/userexperience.cpp
@@ -4,88 +4,60 @@
 
 // internal function declarations
 
-static int FilterResult(
-    __in DWORD dwAllowedResults,
-    __in int nResult
-    );
-
-static HRESULT FilterExecuteResult(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus,
-    __in BOOL fRollback,
-    __in BOOL fCancel,
-    __in LPCWSTR sczEventName
-    );
-
-static HRESULT SendBAMessage(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOTSTRAPPER_APPLICATION_MESSAGE message,
-    __in const LPVOID pvArgs,
-    __inout LPVOID pvResults
-    );
-
-static HRESULT SendBAMessageFromInactiveEngine(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOTSTRAPPER_APPLICATION_MESSAGE message,
-    __in const LPVOID pvArgs,
-    __inout LPVOID pvResults
-    );
+// static int FilterResult(
+//     __in DWORD dwAllowedResults,
+//     __in int nResult
+//     );
+
+// static HRESULT FilterExecuteResult(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus,
+//     __in BOOL fRollback,
+//     __in BOOL fCancel,
+//     __in LPCWSTR sczEventName
+//     );
+
+// static HRESULT SendBAMessage(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in BOOTSTRAPPER_APPLICATION_MESSAGE message,
+//     __in_bcount(cbArgs) const LPVOID pvArgs,
+//     __in const DWORD cbArgs,
+//     __in PIPE_RPC_RESULT* pResult
+//     );
+
+// static HRESULT SendBAMessageFromInactiveEngine(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in BOOTSTRAPPER_APPLICATION_MESSAGE message,
+//     __in const LPVOID pvArgs,
+//     __in const DWORD cbArgs,
+//     __in PIPE_RPC_RESULT* pResult
+//     );
 
 
 // function definitions
 
-/*******************************************************************
- UserExperienceParseFromXml -
-
-*******************************************************************/
-extern "C" HRESULT UserExperienceParseFromXml(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in IXMLDOMNode* pixnBundle
-    )
-{
-    HRESULT hr = S_OK;
-    IXMLDOMNode* pixnUserExperienceNode = NULL;
-
-    // select UX node
-    hr = XmlSelectSingleNode(pixnBundle, L"UX", &pixnUserExperienceNode);
-    if (S_FALSE == hr)
-    {
-        hr = E_NOTFOUND;
-    }
-    ExitOnFailure(hr, "Failed to select user experience node.");
-
-    // parse payloads
-    hr = PayloadsParseFromXml(&pUserExperience->payloads, NULL, NULL, pixnUserExperienceNode);
-    ExitOnFailure(hr, "Failed to parse user experience payloads.");
-
-    // make sure we have at least one payload
-    if (0 == pUserExperience->payloads.cPayloads)
-    {
-        hr = E_UNEXPECTED;
-        ExitOnFailure(hr, "Too few UX payloads.");
-    }
-
-LExit:
-    ReleaseObject(pixnUserExperienceNode);
+// /*******************************************************************
+//  UserExperienceUninitialize -
 
-    return hr;
-}
+// *******************************************************************/
+// extern "C" void UserExperienceUninitialize(
+//     __in BURN_USER_EXPERIENCE* pUserExperience
+//     )
+// {
+//     if (pUserExperience->pEngineContext)
+//     {
+//         BAEngineFreeContext(pUserExperience->pEngineContext);
+//         pUserExperience->pEngineContext = NULL;
+//     }
 
-/*******************************************************************
- UserExperienceUninitialize -
+//     ReleaseStr(pUserExperience->sczTempDirectory);
+//     PayloadsUninitialize(&pUserExperience->payloads);
 
-*******************************************************************/
-extern "C" void UserExperienceUninitialize(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    ReleaseStr(pUserExperience->sczTempDirectory);
-    PayloadsUninitialize(&pUserExperience->payloads);
-
-    // clear struct
-    memset(pUserExperience, 0, sizeof(BURN_USER_EXPERIENCE));
-}
+//     // clear struct
+//     memset(pUserExperience, 0, sizeof(BURN_USER_EXPERIENCE));
+// }
 
+#ifdef TODO_DELETE
 /*******************************************************************
  UserExperienceLoad -
 
@@ -167,2848 +139,2820 @@ extern "C" HRESULT UserExperienceUnload(
 //LExit:
     return hr;
 }
-
-extern "C" HRESULT UserExperienceEnsureWorkingFolder(
-    __in BURN_CACHE* pCache,
-    __deref_out_z LPWSTR* psczUserExperienceWorkingFolder
-    )
-{
-    HRESULT hr = S_OK;
-    LPWSTR sczWorkingFolder = NULL;
-
-    hr = CacheEnsureBaseWorkingFolder(pCache, &sczWorkingFolder);
-    ExitOnFailure(hr, "Failed to create working folder.");
-
-    hr = StrAllocFormatted(psczUserExperienceWorkingFolder, L"%ls%ls\\", sczWorkingFolder, L".ba");
-    ExitOnFailure(hr, "Failed to calculate the bootstrapper application working path.");
-
-    hr = DirEnsureExists(*psczUserExperienceWorkingFolder, NULL);
-    ExitOnFailure(hr, "Failed create bootstrapper application working folder.");
-
-LExit:
-    ReleaseStr(sczWorkingFolder);
-
-    return hr;
-}
-
-
-extern "C" HRESULT UserExperienceRemove(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    HRESULT hr = S_OK;
-
-    // Remove temporary UX directory
-    if (pUserExperience->sczTempDirectory)
-    {
-        hr = DirEnsureDeleteEx(pUserExperience->sczTempDirectory, DIR_DELETE_FILES | DIR_DELETE_RECURSE | DIR_DELETE_SCHEDULE);
-        TraceError(hr, "Could not delete bootstrapper application folder. Some files will be left in the temp folder.");
-    }
-
-//LExit:
-    return hr;
-}
-
-extern "C" int UserExperienceSendError(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOTSTRAPPER_ERROR_TYPE errorType,
-    __in_z_opt LPCWSTR wzPackageId,
-    __in HRESULT hrCode,
-    __in_z_opt LPCWSTR wzError,
-    __in DWORD uiFlags,
-    __in int nRecommendation
-    )
-{
-    int nResult = nRecommendation;
-    DWORD dwCode = HRESULT_CODE(hrCode);
-    LPWSTR sczError = NULL;
-
-    // If no error string was provided, try to get the error string from the HRESULT.
-    if (!wzError)
-    {
-        if (SUCCEEDED(StrAllocFromError(&sczError, hrCode, NULL)))
-        {
-            wzError = sczError;
-        }
-    }
-
-    UserExperienceOnError(pUserExperience, errorType, wzPackageId, dwCode, wzError, uiFlags, 0, NULL, &nResult); // ignore return value.
-
-    ReleaseStr(sczError);
-    return nResult;
-}
-
-extern "C" void UserExperienceActivateEngine(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    ::EnterCriticalSection(&pUserExperience->csEngineActive);
-    AssertSz(!pUserExperience->fEngineActive, "Engine should have been deactivated before activating it.");
-    pUserExperience->fEngineActive = TRUE;
-    ::LeaveCriticalSection(&pUserExperience->csEngineActive);
-}
-
-extern "C" void UserExperienceDeactivateEngine(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    ::EnterCriticalSection(&pUserExperience->csEngineActive);
-    AssertSz(pUserExperience->fEngineActive, "Engine should have been active before deactivating it.");
-    pUserExperience->fEngineActive = FALSE;
-    ::LeaveCriticalSection(&pUserExperience->csEngineActive);
-}
-
-extern "C" HRESULT UserExperienceEnsureEngineInactive(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    // Make a slight optimization here by ignoring the critical section, because all callers should have needed to enter it for their operation anyway.
-    HRESULT hr = pUserExperience->fEngineActive ? HRESULT_FROM_WIN32(ERROR_BUSY) : S_OK;
-    ExitOnRootFailure(hr, "Engine is active, cannot proceed.");
-
-LExit:
-    return hr;
-}
-
-extern "C" void UserExperienceExecuteReset(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    pUserExperience->hrApplyError = S_OK;
-    pUserExperience->hwndApply = NULL;
-}
-
-extern "C" void UserExperienceExecutePhaseComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrResult
-    )
-{
-    if (FAILED(hrResult))
-    {
-        pUserExperience->hrApplyError = hrResult;
-    }
-}
-
-EXTERN_C BAAPI UserExperienceOnApplyBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in DWORD dwPhaseCount
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONAPPLYBEGIN_ARGS args = { };
-    BA_ONAPPLYBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.dwPhaseCount = dwPhaseCount;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONAPPLYBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnApplyBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnApplyComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus,
-    __in BOOTSTRAPPER_APPLY_RESTART restart,
-    __inout BOOTSTRAPPER_APPLYCOMPLETE_ACTION* pAction
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONAPPLYCOMPLETE_ARGS args = { };
-    BA_ONAPPLYCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-    args.restart = restart;
-    args.recommendation = *pAction;
-
-    results.cbSize = sizeof(results);
-    results.action = *pAction;
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONAPPLYCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnApplyComplete failed.");
-
-    *pAction = results.action;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnApplyDowngrade(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __inout HRESULT* phrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONAPPLYDOWNGRADE_ARGS args = { };
-    BA_ONAPPLYDOWNGRADE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrRecommended = *phrStatus;
-
-    results.cbSize = sizeof(results);
-    results.hrStatus = *phrStatus;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONAPPLYDOWNGRADE, &args, &results);
-    ExitOnFailure(hr, "BA OnApplyDowngrade failed.");
-
-    *phrStatus = results.hrStatus;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnBeginMsiTransactionBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in LPCWSTR wzTransactionId
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONBEGINMSITRANSACTIONBEGIN_ARGS args = { };
-    BA_ONBEGINMSITRANSACTIONBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzTransactionId = wzTransactionId;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONBEGINMSITRANSACTIONBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnBeginMsiTransactionBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnBeginMsiTransactionComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in LPCWSTR wzTransactionId,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONBEGINMSITRANSACTIONCOMPLETE_ARGS args = { };
-    BA_ONBEGINMSITRANSACTIONCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzTransactionId = wzTransactionId;
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONBEGINMSITRANSACTIONCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnBeginMsiTransactionComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheAcquireBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in_z LPWSTR* pwzSource,
-    __in_z LPWSTR* pwzDownloadUrl,
-    __in_z_opt LPCWSTR wzPayloadContainerId,
-    __out BOOTSTRAPPER_CACHE_OPERATION* pCacheOperation
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEACQUIREBEGIN_ARGS args = { };
-    BA_ONCACHEACQUIREBEGIN_RESULTS results = { };
-    *pCacheOperation = BOOTSTRAPPER_CACHE_OPERATION_NONE;
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.wzSource = *pwzSource;
-    args.wzDownloadUrl = *pwzDownloadUrl;
-    args.wzPayloadContainerId = wzPayloadContainerId;
-    args.recommendation = *pCacheOperation;
-
-    results.cbSize = sizeof(results);
-    results.action = *pCacheOperation;
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEACQUIREBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheAcquireBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    else
-    {
-        // Verify the BA requested an action that is possible.
-        if (BOOTSTRAPPER_CACHE_OPERATION_DOWNLOAD == results.action && *pwzDownloadUrl && **pwzDownloadUrl ||
-            BOOTSTRAPPER_CACHE_OPERATION_EXTRACT == results.action && wzPayloadContainerId ||
-            BOOTSTRAPPER_CACHE_OPERATION_COPY == results.action ||
-            BOOTSTRAPPER_CACHE_OPERATION_NONE == results.action)
-        {
-            *pCacheOperation = results.action;
-        }
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheAcquireComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in HRESULT hrStatus,
-    __inout BOOL* pfRetry
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEACQUIRECOMPLETE_ARGS args = { };
-    BA_ONCACHEACQUIRECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.hrStatus = hrStatus;
-    args.recommendation = *pfRetry ? BOOTSTRAPPER_CACHEACQUIRECOMPLETE_ACTION_RETRY : BOOTSTRAPPER_CACHEACQUIRECOMPLETE_ACTION_NONE;
-
-    results.cbSize = sizeof(results);
-    results.action = args.recommendation;
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEACQUIRECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheAcquireComplete failed.");
-
-    if (FAILED(hrStatus))
-    {
-        *pfRetry = BOOTSTRAPPER_CACHEACQUIRECOMPLETE_ACTION_RETRY == results.action;
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheAcquireProgress(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in DWORD64 dw64Progress,
-    __in DWORD64 dw64Total,
-    __in DWORD dwOverallPercentage
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEACQUIREPROGRESS_ARGS args = { };
-    BA_ONCACHEACQUIREPROGRESS_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.dw64Progress = dw64Progress;
-    args.dw64Total = dw64Total;
-    args.dwOverallPercentage = dwOverallPercentage;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEACQUIREPROGRESS, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheAcquireProgress failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheAcquireResolving(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in_z LPWSTR* rgSearchPaths,
-    __in DWORD cSearchPaths,
-    __in BOOL fFoundLocal,
-    __in DWORD* pdwChosenSearchPath,
-    __in_z_opt LPWSTR* pwzDownloadUrl,
-    __in_z_opt LPCWSTR wzPayloadContainerId,
-    __inout BOOTSTRAPPER_CACHE_RESOLVE_OPERATION* pCacheOperation
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEACQUIRERESOLVING_ARGS args = { };
-    BA_ONCACHEACQUIRERESOLVING_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.rgSearchPaths = const_cast<LPCWSTR*>(rgSearchPaths);
-    args.cSearchPaths = cSearchPaths;
-    args.fFoundLocal = fFoundLocal;
-    args.dwRecommendedSearchPath = *pdwChosenSearchPath;
-    args.wzDownloadUrl = *pwzDownloadUrl;
-    args.recommendation = *pCacheOperation;
-
-    results.cbSize = sizeof(results);
-    results.dwChosenSearchPath = *pdwChosenSearchPath;
-    results.action = *pCacheOperation;
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEACQUIRERESOLVING, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheAcquireResolving failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    else
-    {
-        // Verify the BA requested an action that is possible.
-        if (BOOTSTRAPPER_CACHE_RESOLVE_DOWNLOAD == results.action && *pwzDownloadUrl && **pwzDownloadUrl ||
-            BOOTSTRAPPER_CACHE_RESOLVE_CONTAINER == results.action && wzPayloadContainerId ||
-            BOOTSTRAPPER_CACHE_RESOLVE_RETRY == results.action ||
-            BOOTSTRAPPER_CACHE_RESOLVE_NONE == results.action)
-        {
-            *pCacheOperation = results.action;
-        }
-        else if (BOOTSTRAPPER_CACHE_RESOLVE_LOCAL == results.action && results.dwChosenSearchPath < cSearchPaths)
-        {
-            *pdwChosenSearchPath = results.dwChosenSearchPath;
-            *pCacheOperation = results.action;
-        }
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEBEGIN_ARGS args = { };
-    BA_ONCACHEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHECOMPLETE_ARGS args = { };
-    BA_ONCACHECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheContainerOrPayloadVerifyBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHECONTAINERORPAYLOADVERIFYBEGIN_ARGS args = { };
-    BA_ONCACHECONTAINERORPAYLOADVERIFYBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHECONTAINERORPAYLOADVERIFYBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheContainerOrPayloadVerifyBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheContainerOrPayloadVerifyComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHECONTAINERORPAYLOADVERIFYCOMPLETE_ARGS args = { };
-    BA_ONCACHECONTAINERORPAYLOADVERIFYCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHECONTAINERORPAYLOADVERIFYCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheContainerOrPayloadVerifyComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheContainerOrPayloadVerifyProgress(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in DWORD64 dw64Progress,
-    __in DWORD64 dw64Total,
-    __in DWORD dwOverallPercentage
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHECONTAINERORPAYLOADVERIFYPROGRESS_ARGS args = { };
-    BA_ONCACHECONTAINERORPAYLOADVERIFYPROGRESS_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.dw64Progress = dw64Progress;
-    args.dw64Total = dw64Total;
-    args.dwOverallPercentage = dwOverallPercentage;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHECONTAINERORPAYLOADVERIFYPROGRESS, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheContainerOrPayloadVerifyProgress failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCachePackageBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in DWORD cCachePayloads,
-    __in DWORD64 dw64PackageCacheSize,
-    __in BOOL fVital
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEPACKAGEBEGIN_ARGS args = { };
-    BA_ONCACHEPACKAGEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.cCachePayloads = cCachePayloads;
-    args.dw64PackageCacheSize = dw64PackageCacheSize;
-    args.fVital = fVital;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPACKAGEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnCachePackageBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCachePackageComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in HRESULT hrStatus,
-    __inout BOOTSTRAPPER_CACHEPACKAGECOMPLETE_ACTION* pAction
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEPACKAGECOMPLETE_ARGS args = { };
-    BA_ONCACHEPACKAGECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.hrStatus = hrStatus;
-    args.recommendation = *pAction;
-
-    results.cbSize = sizeof(results);
-    results.action = *pAction;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPACKAGECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnCachePackageComplete failed.");
-
-    if (FAILED(hrStatus))
-    {
-        *pAction = results.action;
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCachePackageNonVitalValidationFailure(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in HRESULT hrStatus,
-    __inout BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION* pAction
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEPACKAGENONVITALVALIDATIONFAILURE_ARGS args = { };
-    BA_ONCACHEPACKAGENONVITALVALIDATIONFAILURE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.hrStatus = hrStatus;
-    args.recommendation = *pAction;
-
-    results.cbSize = sizeof(results);
-    results.action = *pAction;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPACKAGENONVITALVALIDATIONFAILURE, &args, &results);
-    ExitOnFailure(hr, "BA OnCachePackageNonVitalValidationFailure failed.");
-
-    switch (results.action)
-    {
-    case BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION_NONE: __fallthrough;
-    case BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION_ACQUIRE:
-        *pAction = results.action;
-        break;
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCachePayloadExtractBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzContainerId,
-    __in_z_opt LPCWSTR wzPayloadId
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEPAYLOADEXTRACTBEGIN_ARGS args = { };
-    BA_ONCACHEPAYLOADEXTRACTBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzContainerId = wzContainerId;
-    args.wzPayloadId = wzPayloadId;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPAYLOADEXTRACTBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnCachePayloadExtractBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCachePayloadExtractComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEPAYLOADEXTRACTCOMPLETE_ARGS args = { };
-    BA_ONCACHEPAYLOADEXTRACTCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzContainerId = wzContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPAYLOADEXTRACTCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnCachePayloadExtractComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCachePayloadExtractProgress(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in DWORD64 dw64Progress,
-    __in DWORD64 dw64Total,
-    __in DWORD dwOverallPercentage
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEPAYLOADEXTRACTPROGRESS_ARGS args = { };
-    BA_ONCACHEPAYLOADEXTRACTPROGRESS_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzContainerId = wzContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.dw64Progress = dw64Progress;
-    args.dw64Total = dw64Total;
-    args.dwOverallPercentage = dwOverallPercentage;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPAYLOADEXTRACTPROGRESS, &args, &results);
-    ExitOnFailure(hr, "BA OnCachePayloadExtractProgress failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheVerifyBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEVERIFYBEGIN_ARGS args = { };
-    BA_ONCACHEVERIFYBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEVERIFYBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheVerifyBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheVerifyComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in HRESULT hrStatus,
-    __inout BOOTSTRAPPER_CACHEVERIFYCOMPLETE_ACTION* pAction
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEVERIFYCOMPLETE_ARGS args = { };
-    BA_ONCACHEVERIFYCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.hrStatus = hrStatus;
-    args.recommendation = *pAction;
-
-    results.cbSize = sizeof(results);
-    results.action = *pAction;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEVERIFYCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheVerifyComplete failed.");
-
-    if (FAILED(hrStatus))
-    {
-        *pAction = results.action;
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCacheVerifyProgress(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzPackageOrContainerId,
-    __in_z_opt LPCWSTR wzPayloadId,
-    __in DWORD64 dw64Progress,
-    __in DWORD64 dw64Total,
-    __in DWORD dwOverallPercentage,
-    __in BOOTSTRAPPER_CACHE_VERIFY_STEP verifyStep
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCACHEVERIFYPROGRESS_ARGS args = { };
-    BA_ONCACHEVERIFYPROGRESS_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageOrContainerId = wzPackageOrContainerId;
-    args.wzPayloadId = wzPayloadId;
-    args.dw64Progress = dw64Progress;
-    args.dw64Total = dw64Total;
-    args.dwOverallPercentage = dwOverallPercentage;
-    args.verifyStep = verifyStep;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEVERIFYPROGRESS, &args, &results);
-    ExitOnFailure(hr, "BA OnCacheVerifyProgress failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCommitMsiTransactionBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in LPCWSTR wzTransactionId
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONCOMMITMSITRANSACTIONBEGIN_ARGS args = { };
-    BA_ONCOMMITMSITRANSACTIONBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzTransactionId = wzTransactionId;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCOMMITMSITRANSACTIONBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnCommitMsiTransactionBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnCommitMsiTransactionComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in LPCWSTR wzTransactionId,
-    __in HRESULT hrStatus,
-    __in BOOTSTRAPPER_APPLY_RESTART restart,
-    __inout BOOTSTRAPPER_EXECUTEMSITRANSACTIONCOMPLETE_ACTION* pAction
-)
-{
-    HRESULT hr = S_OK;
-    BA_ONCOMMITMSITRANSACTIONCOMPLETE_ARGS args = { };
-    BA_ONCOMMITMSITRANSACTIONCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzTransactionId = wzTransactionId;
-    args.hrStatus = hrStatus;
-    args.restart = restart;
-    args.recommendation = *pAction;
-
-    results.cbSize = sizeof(results);
-    results.action = *pAction;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCOMMITMSITRANSACTIONCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnCommitMsiTransactionComplete failed.");
-
-    *pAction = results.action;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOL fCached,
-    __in BOOTSTRAPPER_REGISTRATION_TYPE registrationType,
-    __in DWORD cPackages
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTBEGIN_ARGS args = { };
-    BA_ONDETECTBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.cPackages = cPackages;
-    args.registrationType = registrationType;
-    args.fCached = fCached;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectCompatibleMsiPackage(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzCompatiblePackageId,
-    __in VERUTIL_VERSION* pCompatiblePackageVersion
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTCOMPATIBLEMSIPACKAGE_ARGS args = { };
-    BA_ONDETECTCOMPATIBLEMSIPACKAGE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzCompatiblePackageId = wzCompatiblePackageId;
-    args.wzCompatiblePackageVersion = pCompatiblePackageVersion->sczVersion;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTCOMPATIBLEMSIPACKAGE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectCompatibleMsiPackage failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus,
-    __in BOOL fEligibleForCleanup
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTCOMPLETE_ARGS args = { };
-    BA_ONDETECTCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-    args.fEligibleForCleanup = fEligibleForCleanup;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectForwardCompatibleBundle(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzBundleId,
-    __in BOOTSTRAPPER_RELATION_TYPE relationType,
-    __in_z LPCWSTR wzBundleTag,
-    __in BOOL fPerMachine,
-    __in VERUTIL_VERSION* pVersion,
-    __in BOOL fMissingFromCache
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTFORWARDCOMPATIBLEBUNDLE_ARGS args = { };
-    BA_ONDETECTFORWARDCOMPATIBLEBUNDLE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzBundleId = wzBundleId;
-    args.relationType = relationType;
-    args.wzBundleTag = wzBundleTag;
-    args.fPerMachine = fPerMachine;
-    args.wzVersion = pVersion->sczVersion;
-    args.fMissingFromCache = fMissingFromCache;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTFORWARDCOMPATIBLEBUNDLE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectForwardCompatibleBundle failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectMsiFeature(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzFeatureId,
-    __in BOOTSTRAPPER_FEATURE_STATE state
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTMSIFEATURE_ARGS args = { };
-    BA_ONDETECTMSIFEATURE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzFeatureId = wzFeatureId;
-    args.state = state;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTMSIFEATURE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectMsiFeature failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectPackageBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTPACKAGEBEGIN_ARGS args = { };
-    BA_ONDETECTPACKAGEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTPACKAGEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectPackageBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectPackageComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in HRESULT hrStatus,
-    __in BOOTSTRAPPER_PACKAGE_STATE state,
-    __in BOOL fCached
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTPACKAGECOMPLETE_ARGS args = { };
-    BA_ONDETECTPACKAGECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.hrStatus = hrStatus;
-    args.state = state;
-    args.fCached = fCached;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTPACKAGECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectPackageComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectRelatedBundle(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzBundleId,
-    __in BOOTSTRAPPER_RELATION_TYPE relationType,
-    __in_z LPCWSTR wzBundleTag,
-    __in BOOL fPerMachine,
-    __in VERUTIL_VERSION* pVersion,
-    __in BOOL fMissingFromCache
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTRELATEDBUNDLE_ARGS args = { };
-    BA_ONDETECTRELATEDBUNDLE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzBundleId = wzBundleId;
-    args.relationType = relationType;
-    args.wzBundleTag = wzBundleTag;
-    args.fPerMachine = fPerMachine;
-    args.wzVersion = pVersion->sczVersion;
-    args.fMissingFromCache = fMissingFromCache;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTRELATEDBUNDLE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectRelatedBundle failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectRelatedBundlePackage(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzBundleId,
-    __in BOOTSTRAPPER_RELATION_TYPE relationType,
-    __in BOOL fPerMachine,
-    __in VERUTIL_VERSION* pVersion
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTRELATEDBUNDLEPACKAGE_ARGS args = { };
-    BA_ONDETECTRELATEDBUNDLEPACKAGE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzBundleId = wzBundleId;
-    args.relationType = relationType;
-    args.fPerMachine = fPerMachine;
-    args.wzVersion = pVersion->sczVersion;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTRELATEDBUNDLEPACKAGE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectRelatedBundlePackage failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectRelatedMsiPackage(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzUpgradeCode,
-    __in_z LPCWSTR wzProductCode,
-    __in BOOL fPerMachine,
-    __in VERUTIL_VERSION* pVersion,
-    __in BOOTSTRAPPER_RELATED_OPERATION operation
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTRELATEDMSIPACKAGE_ARGS args = { };
-    BA_ONDETECTRELATEDMSIPACKAGE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzUpgradeCode = wzUpgradeCode;
-    args.wzProductCode = wzProductCode;
-    args.fPerMachine = fPerMachine;
-    args.wzVersion = pVersion->sczVersion;
-    args.operation = operation;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTRELATEDMSIPACKAGE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectRelatedMsiPackage failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectPatchTarget(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzProductCode,
-    __in BOOTSTRAPPER_PACKAGE_STATE patchState
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTPATCHTARGET_ARGS args = { };
-    BA_ONDETECTPATCHTARGET_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzProductCode = wzProductCode;
-    args.patchState = patchState;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTPATCHTARGET, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectPatchTarget failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectUpdate(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z_opt LPCWSTR wzUpdateLocation,
-    __in DWORD64 dw64Size,
-    __in_z_opt LPCWSTR wzHash,
-    __in BOOTSTRAPPER_UPDATE_HASH_TYPE hashAlgorithm,
-    __in VERUTIL_VERSION* pVersion,
-    __in_z_opt LPCWSTR wzTitle,
-    __in_z_opt LPCWSTR wzSummary,
-    __in_z_opt LPCWSTR wzContentType,
-    __in_z_opt LPCWSTR wzContent,
-    __inout BOOL* pfStopProcessingUpdates
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTUPDATE_ARGS args = { };
-    BA_ONDETECTUPDATE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzUpdateLocation = wzUpdateLocation;
-    args.dw64Size = dw64Size;
-    args.wzHash = wzHash;
-    args.hashAlgorithm = hashAlgorithm;
-    args.wzVersion = pVersion->sczVersion;
-    args.wzTitle = wzTitle;
-    args.wzSummary = wzSummary;
-    args.wzContentType = wzContentType;
-    args.wzContent = wzContent;
-
-    results.cbSize = sizeof(results);
-    results.fStopProcessingUpdates = *pfStopProcessingUpdates;
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTUPDATE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectUpdate failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-    *pfStopProcessingUpdates = results.fStopProcessingUpdates;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectUpdateBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzUpdateLocation,
-    __inout BOOL* pfSkip
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTUPDATEBEGIN_ARGS args = { };
-    BA_ONDETECTUPDATEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzUpdateLocation = wzUpdateLocation;
-
-    results.cbSize = sizeof(results);
-    results.fSkip = *pfSkip;
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTUPDATEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectUpdateBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pfSkip = results.fSkip;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnDetectUpdateComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus,
-    __inout BOOL* pfIgnoreError
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONDETECTUPDATECOMPLETE_ARGS args = { };
-    BA_ONDETECTUPDATECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-    results.fIgnoreError = *pfIgnoreError;
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTUPDATECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnDetectUpdateComplete failed.");
-
-    if (FAILED(hrStatus))
-    {
-        *pfIgnoreError = results.fIgnoreError;
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnElevateBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONELEVATEBEGIN_ARGS args = { };
-    BA_ONELEVATEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONELEVATEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnElevateBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnElevateComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONELEVATECOMPLETE_ARGS args = { };
-    BA_ONELEVATECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONELEVATECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnElevateComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnError(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOTSTRAPPER_ERROR_TYPE errorType,
-    __in_z_opt LPCWSTR wzPackageId,
-    __in DWORD dwCode,
-    __in_z_opt LPCWSTR wzError,
-    __in DWORD dwUIHint,
-    __in DWORD cData,
-    __in_ecount_z_opt(cData) LPCWSTR* rgwzData,
-    __inout int* pnResult
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONERROR_ARGS args = { };
-    BA_ONERROR_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.errorType = errorType;
-    args.wzPackageId = wzPackageId;
-    args.dwCode = dwCode;
-    args.wzError = wzError;
-    args.dwUIHint = dwUIHint;
-    args.cData = cData;
-    args.rgwzData = rgwzData;
-    args.nRecommendation = *pnResult;
-
-    results.cbSize = sizeof(results);
-    results.nResult = *pnResult;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONERROR, &args, &results);
-    ExitOnFailure(hr, "BA OnError failed.");
-
-    *pnResult = results.nResult;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnExecuteBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in DWORD cExecutingPackages
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONEXECUTEBEGIN_ARGS args = { };
-    BA_ONEXECUTEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.cExecutingPackages = cExecutingPackages;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnExecuteBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnExecuteComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONEXECUTECOMPLETE_ARGS args = { };
-    BA_ONEXECUTECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnExecuteComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnExecuteFilesInUse(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in DWORD cFiles,
-    __in_ecount_z_opt(cFiles) LPCWSTR* rgwzFiles,
-    __in BOOTSTRAPPER_FILES_IN_USE_TYPE source,
-    __inout int* pnResult
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONEXECUTEFILESINUSE_ARGS args = { };
-    BA_ONEXECUTEFILESINUSE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.cFiles = cFiles;
-    args.rgwzFiles = rgwzFiles;
-    args.nRecommendation = *pnResult;
-    args.source = source;
-
-    results.cbSize = sizeof(results);
-    results.nResult = *pnResult;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEFILESINUSE, &args, &results);
-    ExitOnFailure(hr, "BA OnExecuteFilesInUse failed.");
-
-    *pnResult = results.nResult;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnExecuteMsiMessage(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in INSTALLMESSAGE messageType,
-    __in DWORD dwUIHint,
-    __in_z LPCWSTR wzMessage,
-    __in DWORD cData,
-    __in_ecount_z_opt(cData) LPCWSTR* rgwzData,
-    __inout int* pnResult
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONEXECUTEMSIMESSAGE_ARGS args = { };
-    BA_ONEXECUTEMSIMESSAGE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.messageType = messageType;
-    args.dwUIHint = dwUIHint;
-    args.wzMessage = wzMessage;
-    args.cData = cData;
-    args.rgwzData = rgwzData;
-    args.nRecommendation = *pnResult;
-
-    results.cbSize = sizeof(results);
-    results.nResult = *pnResult;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEMSIMESSAGE, &args, &results);
-    ExitOnFailure(hr, "BA OnExecuteMsiMessage failed.");
-
-    *pnResult = results.nResult;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnExecutePackageBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in BOOL fExecute,
-    __in BOOTSTRAPPER_ACTION_STATE action,
-    __in INSTALLUILEVEL uiLevel,
-    __in BOOL fDisableExternalUiHandler
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONEXECUTEPACKAGEBEGIN_ARGS args = { };
-    BA_ONEXECUTEPACKAGEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.fExecute = fExecute;
-    args.action = action;
-    args.uiLevel = uiLevel;
-    args.fDisableExternalUiHandler = fDisableExternalUiHandler;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPACKAGEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnExecutePackageBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnExecutePackageComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in HRESULT hrStatus,
-    __in BOOTSTRAPPER_APPLY_RESTART restart,
-    __inout BOOTSTRAPPER_EXECUTEPACKAGECOMPLETE_ACTION* pAction
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONEXECUTEPACKAGECOMPLETE_ARGS args = { };
-    BA_ONEXECUTEPACKAGECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.hrStatus = hrStatus;
-    args.restart = restart;
-    args.recommendation = *pAction;
-
-    results.cbSize = sizeof(results);
-    results.action = *pAction;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPACKAGECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnExecutePackageComplete failed.");
-
-    *pAction = results.action;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnExecutePatchTarget(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzTargetProductCode
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONEXECUTEPATCHTARGET_ARGS args = { };
-    BA_ONEXECUTEPATCHTARGET_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzTargetProductCode = wzTargetProductCode;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPATCHTARGET, &args, &results);
-    ExitOnFailure(hr, "BA OnExecutePatchTarget failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-BAAPI UserExperienceOnExecuteProcessCancel(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in DWORD dwProcessId,
-    __inout BOOTSTRAPPER_EXECUTEPROCESSCANCEL_ACTION* pAction
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONEXECUTEPROCESSCANCEL_ARGS args = { };
-    BA_ONEXECUTEPROCESSCANCEL_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.dwProcessId = dwProcessId;
-    args.recommendation = *pAction;
-
-    results.cbSize = sizeof(results);
-    results.action = *pAction;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPROCESSCANCEL, &args, &results);
-    ExitOnFailure(hr, "BA OnExecuteProcessCancel failed.");
-
-    *pAction = results.action;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnExecuteProgress(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in DWORD dwProgressPercentage,
-    __in DWORD dwOverallPercentage,
-    __out int* pnResult
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONEXECUTEPROGRESS_ARGS args = { };
-    BA_ONEXECUTEPROGRESS_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.dwProgressPercentage = dwProgressPercentage;
-    args.dwOverallPercentage = dwOverallPercentage;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPROGRESS, &args, &results);
-    ExitOnFailure(hr, "BA OnExecuteProgress failed.");
-
-LExit:
-    if (FAILED(hr))
-    {
-        *pnResult = IDERROR;
-    }
-    else if (results.fCancel)
-    {
-        *pnResult = IDCANCEL;
-    }
-    else
-    {
-        *pnResult = IDNOACTION;
-    }
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnLaunchApprovedExeBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONLAUNCHAPPROVEDEXEBEGIN_ARGS args = { };
-    BA_ONLAUNCHAPPROVEDEXEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONLAUNCHAPPROVEDEXEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnLaunchApprovedExeBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnLaunchApprovedExeComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus,
-    __in DWORD dwProcessId
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONLAUNCHAPPROVEDEXECOMPLETE_ARGS args = { };
-    BA_ONLAUNCHAPPROVEDEXECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-    args.dwProcessId = dwProcessId;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONLAUNCHAPPROVEDEXECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnLaunchApprovedExeComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPauseAUBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPAUSEAUTOMATICUPDATESBEGIN_ARGS args = { };
-    BA_ONPAUSEAUTOMATICUPDATESBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPAUSEAUTOMATICUPDATESBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnPauseAUBegin failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPauseAUComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPAUSEAUTOMATICUPDATESCOMPLETE_ARGS args = { };
-    BA_ONPAUSEAUTOMATICUPDATESCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPAUSEAUTOMATICUPDATESCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnPauseAUComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in DWORD cPackages
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANBEGIN_ARGS args = { };
-    BA_ONPLANBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.cPackages = cPackages;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanCompatibleMsiPackageBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzCompatiblePackageId,
-    __in VERUTIL_VERSION* pCompatiblePackageVersion,
-    __inout BOOL* pfRequested
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANCOMPATIBLEMSIPACKAGEBEGIN_ARGS args = { };
-    BA_ONPLANCOMPATIBLEMSIPACKAGEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzCompatiblePackageId = wzCompatiblePackageId;
-    args.wzCompatiblePackageVersion = pCompatiblePackageVersion->sczVersion;
-    args.fRecommendedRemove = *pfRequested;
-
-    results.cbSize = sizeof(results);
-    results.fRequestRemove = *pfRequested;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANCOMPATIBLEMSIPACKAGEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanCompatibleMsiPackageBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pfRequested = results.fRequestRemove;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanCompatibleMsiPackageComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzCompatiblePackageId,
-    __in HRESULT hrStatus,
-    __in BOOL fRequested
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANCOMPATIBLEMSIPACKAGECOMPLETE_ARGS args = { };
-    BA_ONPLANCOMPATIBLEMSIPACKAGECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzCompatiblePackageId = wzCompatiblePackageId;
-    args.hrStatus = hrStatus;
-    args.fRequestedRemove = fRequested;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANCOMPATIBLEMSIPACKAGECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanCompatibleMsiPackageComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanMsiFeature(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzFeatureId,
-    __inout BOOTSTRAPPER_FEATURE_STATE* pRequestedState
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANMSIFEATURE_ARGS args = { };
-    BA_ONPLANMSIFEATURE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzFeatureId = wzFeatureId;
-    args.recommendedState = *pRequestedState;
-
-    results.cbSize = sizeof(results);
-    results.requestedState = *pRequestedState;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANMSIFEATURE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanMsiFeature failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pRequestedState = results.requestedState;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANCOMPLETE_ARGS args = { };
-    BA_ONPLANCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanForwardCompatibleBundle(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzBundleId,
-    __in BOOTSTRAPPER_RELATION_TYPE relationType,
-    __in_z LPCWSTR wzBundleTag,
-    __in BOOL fPerMachine,
-    __in VERUTIL_VERSION* pVersion,
-    __inout BOOL* pfIgnoreBundle
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANFORWARDCOMPATIBLEBUNDLE_ARGS args = { };
-    BA_ONPLANFORWARDCOMPATIBLEBUNDLE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzBundleId = wzBundleId;
-    args.relationType = relationType;
-    args.wzBundleTag = wzBundleTag;
-    args.fPerMachine = fPerMachine;
-    args.wzVersion = pVersion->sczVersion;
-    args.fRecommendedIgnoreBundle = *pfIgnoreBundle;
-
-    results.cbSize = sizeof(results);
-    results.fIgnoreBundle = *pfIgnoreBundle;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANFORWARDCOMPATIBLEBUNDLE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanForwardCompatibleBundle failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pfIgnoreBundle = results.fIgnoreBundle;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanMsiPackage(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in BOOL fExecute,
-    __in BOOTSTRAPPER_ACTION_STATE action,
-    __inout BURN_MSI_PROPERTY* pActionMsiProperty,
-    __inout INSTALLUILEVEL* pUiLevel,
-    __inout BOOL* pfDisableExternalUiHandler,
-    __inout BOOTSTRAPPER_MSI_FILE_VERSIONING* pFileVersioning
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANMSIPACKAGE_ARGS args = { };
-    BA_ONPLANMSIPACKAGE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.fExecute = fExecute;
-    args.action = action;
-    args.recommendedFileVersioning = *pFileVersioning;
-
-    results.cbSize = sizeof(results);
-    results.actionMsiProperty = *pActionMsiProperty;
-    results.uiLevel = *pUiLevel;
-    results.fDisableExternalUiHandler = *pfDisableExternalUiHandler;
-    results.fileVersioning = args.recommendedFileVersioning;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANMSIPACKAGE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanMsiPackage failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pActionMsiProperty = results.actionMsiProperty;
-    *pUiLevel = results.uiLevel;
-    *pfDisableExternalUiHandler = results.fDisableExternalUiHandler;
-    *pFileVersioning = results.fileVersioning;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlannedCompatiblePackage(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzCompatiblePackageId,
-    __in BOOL fRemove
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANNEDCOMPATIBLEPACKAGE_ARGS args = { };
-    BA_ONPLANNEDCOMPATIBLEPACKAGE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzCompatiblePackageId = wzCompatiblePackageId;
-    args.fRemove = fRemove;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANNEDCOMPATIBLEPACKAGE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlannedCompatiblePackage failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlannedPackage(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in BOOTSTRAPPER_ACTION_STATE execute,
-    __in BOOTSTRAPPER_ACTION_STATE rollback,
-    __in BOOL fPlannedCache,
-    __in BOOL fPlannedUncache
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANNEDPACKAGE_ARGS args = { };
-    BA_ONPLANNEDPACKAGE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.execute = execute;
-    args.rollback = rollback;
-    args.fPlannedCache = fPlannedCache;
-    args.fPlannedUncache = fPlannedUncache;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANNEDPACKAGE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlannedPackage failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanPackageBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in BOOTSTRAPPER_PACKAGE_STATE state,
-    __in BOOL fCached,
-    __in BOOTSTRAPPER_PACKAGE_CONDITION_RESULT installCondition,
-    __in BOOTSTRAPPER_PACKAGE_CONDITION_RESULT repairCondition,
-    __inout BOOTSTRAPPER_REQUEST_STATE* pRequestedState,
-    __inout BOOTSTRAPPER_CACHE_TYPE* pRequestedCacheType
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANPACKAGEBEGIN_ARGS args = { };
-    BA_ONPLANPACKAGEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.state = state;
-    args.fCached = fCached;
-    args.installCondition = installCondition;
-    args.repairCondition = repairCondition;
-    args.recommendedState = *pRequestedState;
-    args.recommendedCacheType = *pRequestedCacheType;
-
-    results.cbSize = sizeof(results);
-    results.requestedState = *pRequestedState;
-    results.requestedCacheType = *pRequestedCacheType;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANPACKAGEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanPackageBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pRequestedState = results.requestedState;
-
-    if (BOOTSTRAPPER_CACHE_TYPE_REMOVE <= results.requestedCacheType && BOOTSTRAPPER_CACHE_TYPE_FORCE >= results.requestedCacheType)
-    {
-        *pRequestedCacheType = results.requestedCacheType;
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanPackageComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in HRESULT hrStatus,
-    __in BOOTSTRAPPER_REQUEST_STATE requested
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANPACKAGECOMPLETE_ARGS args = { };
-    BA_ONPLANPACKAGECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.hrStatus = hrStatus;
-    args.requested = requested;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANPACKAGECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanPackageComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanRelatedBundle(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzBundleId,
-    __inout BOOTSTRAPPER_REQUEST_STATE* pRequestedState
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANRELATEDBUNDLE_ARGS args = { };
-    BA_ONPLANRELATEDBUNDLE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzBundleId = wzBundleId;
-    args.recommendedState = *pRequestedState;
-
-    results.cbSize = sizeof(results);
-    results.requestedState = *pRequestedState;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANRELATEDBUNDLE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanRelatedBundle failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pRequestedState = results.requestedState;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanRelatedBundleType(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzBundleId,
-    __inout BOOTSTRAPPER_RELATED_BUNDLE_PLAN_TYPE* pRequestedType
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANRELATEDBUNDLETYPE_ARGS args = { };
-    BA_ONPLANRELATEDBUNDLETYPE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzBundleId = wzBundleId;
-    args.recommendedType = *pRequestedType;
-
-    results.cbSize = sizeof(results);
-    results.requestedType = *pRequestedType;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANRELATEDBUNDLETYPE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanRelatedBundleType failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pRequestedType = results.requestedType;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanRestoreRelatedBundle(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzBundleId,
-    __inout BOOTSTRAPPER_REQUEST_STATE* pRequestedState
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANRESTORERELATEDBUNDLE_ARGS args = { };
-    BA_ONPLANRESTORERELATEDBUNDLE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzBundleId = wzBundleId;
-    args.recommendedState = *pRequestedState;
-
-    results.cbSize = sizeof(results);
-    results.requestedState = *pRequestedState;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANRESTORERELATEDBUNDLE, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanRestoreRelatedBundle failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pRequestedState = results.requestedState;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanRollbackBoundary(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzRollbackBoundaryId,
-    __inout BOOL* pfTransaction
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANROLLBACKBOUNDARY_ARGS args = { };
-    BA_ONPLANROLLBACKBOUNDARY_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzRollbackBoundaryId = wzRollbackBoundaryId;
-    args.fRecommendedTransaction = *pfTransaction;
-
-    results.cbSize = sizeof(results);
-    results.fTransaction = *pfTransaction;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANROLLBACKBOUNDARY, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanRollbackBoundary failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pfTransaction = results.fTransaction;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnPlanPatchTarget(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in_z LPCWSTR wzPackageId,
-    __in_z LPCWSTR wzProductCode,
-    __inout BOOTSTRAPPER_REQUEST_STATE* pRequestedState
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPLANPATCHTARGET_ARGS args = { };
-    BA_ONPLANPATCHTARGET_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzPackageId = wzPackageId;
-    args.wzProductCode = wzProductCode;
-    args.recommendedState = *pRequestedState;
-
-    results.cbSize = sizeof(results);
-    results.requestedState = *pRequestedState;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANPATCHTARGET, &args, &results);
-    ExitOnFailure(hr, "BA OnPlanPatchTarget failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    *pRequestedState = results.requestedState;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnProgress(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOL fRollback,
-    __in DWORD dwProgressPercentage,
-    __in DWORD dwOverallPercentage
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONPROGRESS_ARGS args = { };
-    BA_ONPROGRESS_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.dwProgressPercentage = dwProgressPercentage;
-    args.dwOverallPercentage = dwOverallPercentage;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPROGRESS, &args, &results);
-    hr = FilterExecuteResult(pUserExperience, hr, fRollback, results.fCancel, L"OnProgress");
-
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnRegisterBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __inout BOOTSTRAPPER_REGISTRATION_TYPE* pRegistrationType
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONREGISTERBEGIN_ARGS args = { };
-    BA_ONREGISTERBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.recommendedRegistrationType = *pRegistrationType;
-
-    results.cbSize = sizeof(results);
-    results.registrationType = *pRegistrationType;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONREGISTERBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnRegisterBegin failed.");
-
-    if (results.fCancel)
-    {
-        hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-    }
-    else if (BOOTSTRAPPER_REGISTRATION_TYPE_NONE < results.registrationType && BOOTSTRAPPER_REGISTRATION_TYPE_FULL >= results.registrationType)
-    {
-        *pRegistrationType = results.registrationType;
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnRegisterComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONREGISTERCOMPLETE_ARGS args = { };
-    BA_ONREGISTERCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONREGISTERCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnRegisterComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnRollbackMsiTransactionBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in LPCWSTR wzTransactionId
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONROLLBACKMSITRANSACTIONBEGIN_ARGS args = { };
-    BA_ONROLLBACKMSITRANSACTIONBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzTransactionId = wzTransactionId;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONROLLBACKMSITRANSACTIONBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnRollbackMsiTransactionBegin failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnRollbackMsiTransactionComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in LPCWSTR wzTransactionId,
-    __in HRESULT hrStatus,
-    __in BOOTSTRAPPER_APPLY_RESTART restart,
-    __inout BOOTSTRAPPER_EXECUTEMSITRANSACTIONCOMPLETE_ACTION *pAction
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONROLLBACKMSITRANSACTIONCOMPLETE_ARGS args = { };
-    BA_ONROLLBACKMSITRANSACTIONCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.wzTransactionId = wzTransactionId;
-    args.hrStatus = hrStatus;
-    args.restart = restart;
-    args.recommendation = *pAction;
-
-    results.cbSize = sizeof(results);
-    results.action = *pAction;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONROLLBACKMSITRANSACTIONCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnRollbackMsiTransactionComplete failed.");
-
-    *pAction = results.action;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnSetUpdateBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONSETUPDATEBEGIN_ARGS args = { };
-    BA_ONSETUPDATEBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSETUPDATEBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnSetUpdateBegin failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnSetUpdateComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus,
-    __in_z_opt LPCWSTR wzPreviousPackageId,
-    __in_z_opt LPCWSTR wzNewPackageId
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONSETUPDATECOMPLETE_ARGS args = { };
-    BA_ONSETUPDATECOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-    args.wzPreviousPackageId = wzPreviousPackageId;
-    args.wzNewPackageId = wzNewPackageId;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSETUPDATECOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnSetUpdateComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnShutdown(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __inout BOOTSTRAPPER_SHUTDOWN_ACTION* pAction
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONSHUTDOWN_ARGS args = { };
-    BA_ONSHUTDOWN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-
-    results.cbSize = sizeof(results);
-    results.action = *pAction;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSHUTDOWN, &args, &results);
-    ExitOnFailure(hr, "BA OnShutdown failed.");
-
-    *pAction = results.action;
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnStartup(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONSTARTUP_ARGS args = { };
-    BA_ONSTARTUP_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSTARTUP, &args, &results);
-    ExitOnFailure(hr, "BA OnStartup failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnSystemRestorePointBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONSYSTEMRESTOREPOINTBEGIN_ARGS args = { };
-    BA_ONSYSTEMRESTOREPOINTBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSYSTEMRESTOREPOINTBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnSystemRestorePointBegin failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnSystemRestorePointComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONSYSTEMRESTOREPOINTCOMPLETE_ARGS args = { };
-    BA_ONSYSTEMRESTOREPOINTCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSYSTEMRESTOREPOINTCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnSystemRestorePointComplete failed.");
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnUnregisterBegin(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __inout BOOTSTRAPPER_REGISTRATION_TYPE* pRegistrationType
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONUNREGISTERBEGIN_ARGS args = { };
-    BA_ONUNREGISTERBEGIN_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.recommendedRegistrationType = *pRegistrationType;
-
-    results.cbSize = sizeof(results);
-    results.registrationType = *pRegistrationType;
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONUNREGISTERBEGIN, &args, &results);
-    ExitOnFailure(hr, "BA OnUnregisterBegin failed.");
-
-    if (BOOTSTRAPPER_REGISTRATION_TYPE_NONE < results.registrationType && BOOTSTRAPPER_REGISTRATION_TYPE_FULL >= results.registrationType)
-    {
-        *pRegistrationType = results.registrationType;
-    }
-
-LExit:
-    return hr;
-}
-
-EXTERN_C BAAPI UserExperienceOnUnregisterComplete(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus
-    )
-{
-    HRESULT hr = S_OK;
-    BA_ONUNREGISTERCOMPLETE_ARGS args = { };
-    BA_ONUNREGISTERCOMPLETE_RESULTS results = { };
-
-    args.cbSize = sizeof(args);
-    args.hrStatus = hrStatus;
-
-    results.cbSize = sizeof(results);
-
-    hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONUNREGISTERCOMPLETE, &args, &results);
-    ExitOnFailure(hr, "BA OnUnregisterComplete failed.");
-
-LExit:
-    return hr;
-}
-
-extern "C" int UserExperienceCheckExecuteResult(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOL fRollback,
-    __in DWORD dwAllowedResults,
-    __in int nResult
-    )
-{
-    // Do not allow canceling while rolling back.
-    if (fRollback && (IDCANCEL == nResult || IDABORT == nResult))
-    {
-        nResult = IDNOACTION;
-    }
-    else if (FAILED(pUserExperience->hrApplyError) && !fRollback) // if we failed cancel except not during rollback.
-    {
-        nResult = IDCANCEL;
-    }
-
-    nResult = FilterResult(dwAllowedResults, nResult);
-    return nResult;
-}
-
-extern "C" HRESULT UserExperienceInterpretExecuteResult(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOL fRollback,
-    __in DWORD dwAllowedResults,
-    __in int nResult
-    )
-{
-    HRESULT hr = S_OK;
-
-    // If we failed return that error unless this is rollback which should roll on.
-    if (FAILED(pUserExperience->hrApplyError) && !fRollback)
-    {
-        hr = pUserExperience->hrApplyError;
-    }
-    else
-    {
-        int nCheckedResult = UserExperienceCheckExecuteResult(pUserExperience, fRollback, dwAllowedResults, nResult);
-        hr = IDOK == nCheckedResult || IDNOACTION == nCheckedResult ? S_OK : IDCANCEL == nCheckedResult || IDABORT == nCheckedResult ? HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT) : HRESULT_FROM_WIN32(ERROR_INSTALL_FAILURE);
-    }
-
-    return hr;
-}
-
-
-// internal functions
-
-static int FilterResult(
-    __in DWORD dwAllowedResults,
-    __in int nResult
-    )
-{
-    if (IDNOACTION == nResult || IDERROR == nResult) // do nothing and errors pass through.
-    {
-    }
-    else
-    {
-        switch (dwAllowedResults)
-        {
-        case MB_OK:
-            nResult = IDOK;
-            break;
-
-        case MB_OKCANCEL:
-            if (IDOK == nResult || IDYES == nResult)
-            {
-                nResult = IDOK;
-            }
-            else if (IDCANCEL == nResult || IDABORT == nResult || IDNO == nResult)
-            {
-                nResult = IDCANCEL;
-            }
-            else
-            {
-                nResult = IDNOACTION;
-            }
-            break;
-
-        case MB_ABORTRETRYIGNORE:
-            if (IDCANCEL == nResult || IDABORT == nResult)
-            {
-                nResult = IDABORT;
-            }
-            else if (IDRETRY == nResult || IDTRYAGAIN == nResult)
-            {
-                nResult = IDRETRY;
-            }
-            else if (IDIGNORE == nResult)
-            {
-                nResult = IDIGNORE;
-            }
-            else
-            {
-                nResult = IDNOACTION;
-            }
-            break;
-
-        case MB_YESNO:
-            if (IDOK == nResult || IDYES == nResult)
-            {
-                nResult = IDYES;
-            }
-            else if (IDCANCEL == nResult || IDABORT == nResult || IDNO == nResult)
-            {
-                nResult = IDNO;
-            }
-            else
-            {
-                nResult = IDNOACTION;
-            }
-            break;
-
-        case MB_YESNOCANCEL:
-            if (IDOK == nResult || IDYES == nResult)
-            {
-                nResult = IDYES;
-            }
-            else if (IDNO == nResult)
-            {
-                nResult = IDNO;
-            }
-            else if (IDCANCEL == nResult || IDABORT == nResult)
-            {
-                nResult = IDCANCEL;
-            }
-            else
-            {
-                nResult = IDNOACTION;
-            }
-            break;
-
-        case MB_RETRYCANCEL:
-            if (IDRETRY == nResult || IDTRYAGAIN == nResult)
-            {
-                nResult = IDRETRY;
-            }
-            else if (IDCANCEL == nResult || IDABORT == nResult)
-            {
-                nResult = IDABORT;
-            }
-            else
-            {
-                nResult = IDNOACTION;
-            }
-            break;
-
-        case MB_CANCELTRYCONTINUE:
-            if (IDCANCEL == nResult || IDABORT == nResult)
-            {
-                nResult = IDABORT;
-            }
-            else if (IDRETRY == nResult || IDTRYAGAIN == nResult)
-            {
-                nResult = IDRETRY;
-            }
-            else if (IDCONTINUE == nResult || IDIGNORE == nResult)
-            {
-                nResult = IDCONTINUE;
-            }
-            else
-            {
-                nResult = IDNOACTION;
-            }
-            break;
-
-        case BURN_MB_RETRYTRYAGAIN: // custom return code.
-            if (IDRETRY != nResult && IDTRYAGAIN != nResult)
-            {
-                nResult = IDNOACTION;
-            }
-            break;
-
-        default:
-            AssertSz(FALSE, "Unknown allowed results.");
-            break;
-        }
-    }
-
-    return nResult;
-}
-
-// This filters the BA's responses to events during apply.
-// If an apply thread failed, then return its error so this thread will bail out.
-// During rollback, the BA can't cancel.
-static HRESULT FilterExecuteResult(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in HRESULT hrStatus,
-    __in BOOL fRollback,
-    __in BOOL fCancel,
-    __in LPCWSTR sczEventName
-    )
-{
-    HRESULT hr = hrStatus;
-    HRESULT hrApplyError = pUserExperience->hrApplyError; // make sure to use the same value for the whole method, since it can be changed in other threads.
-
-    // If we failed return that error unless this is rollback which should roll on.
-    if (FAILED(hrApplyError) && !fRollback)
-    {
-        hr = hrApplyError;
-    }
-    else if (fRollback)
-    {
-        if (fCancel)
-        {
-            LogId(REPORT_STANDARD, MSG_APPLY_CANCEL_IGNORED_DURING_ROLLBACK, sczEventName);
-        }
-        // TODO: since cancel isn't allowed, should the BA's HRESULT be ignored as well?
-        // In the previous code, they could still alter rollback by returning IDERROR.
-    }
-    else
-    {
-        ExitOnFailure(hr, "BA %ls failed.", sczEventName);
-
-        if (fCancel)
-        {
-            hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
-        }
-    }
-
-LExit:
-    return hr;
-}
-
-static HRESULT SendBAMessage(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOTSTRAPPER_APPLICATION_MESSAGE message,
-    __in const LPVOID pvArgs,
-    __inout LPVOID pvResults
-    )
-{
-    HRESULT hr = S_OK;
-
-    if (!pUserExperience->hUXModule)
-    {
-        ExitFunction();
-    }
-
-    hr = pUserExperience->pfnBAProc(message, pvArgs, pvResults, pUserExperience->pvBAProcContext);
-    if (hr == E_NOTIMPL)
-    {
-        hr = S_OK;
-    }
-
-LExit:
-    return hr;
-}
-
-static HRESULT SendBAMessageFromInactiveEngine(
-    __in BURN_USER_EXPERIENCE* pUserExperience,
-    __in BOOTSTRAPPER_APPLICATION_MESSAGE message,
-    __in const LPVOID pvArgs,
-    __inout LPVOID pvResults
-    )
-{
-    HRESULT hr = S_OK;
-
-    if (!pUserExperience->hUXModule)
-    {
-        ExitFunction();
-    }
-
-    UserExperienceDeactivateEngine(pUserExperience);
-
-    hr = SendBAMessage(pUserExperience, message, pvArgs, pvResults);
-
-    UserExperienceActivateEngine(pUserExperience);
-
-LExit:
-    return hr;
-}
+#endif
+
+// EXTERN_C BAAPI UserExperienceOnApplyBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in DWORD dwPhaseCount
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONAPPLYBEGIN_ARGS args = { };
+//     BA_ONAPPLYBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.dwPhaseCount = dwPhaseCount;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONAPPLYBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnApplyBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnApplyComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus,
+//     __in BOOTSTRAPPER_APPLY_RESTART restart,
+//     __inout BOOTSTRAPPER_APPLYCOMPLETE_ACTION* pAction
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONAPPLYCOMPLETE_ARGS args = { };
+//     BA_ONAPPLYCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+//     args.restart = restart;
+//     args.recommendation = *pAction;
+
+//     results.cbSize = sizeof(results);
+//     results.action = *pAction;
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONAPPLYCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnApplyComplete failed.");
+
+//     *pAction = results.action;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnApplyDowngrade(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __inout HRESULT* phrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONAPPLYDOWNGRADE_ARGS args = { };
+//     BA_ONAPPLYDOWNGRADE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrRecommended = *phrStatus;
+
+//     results.cbSize = sizeof(results);
+//     results.hrStatus = *phrStatus;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONAPPLYDOWNGRADE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnApplyDowngrade failed.");
+
+//     *phrStatus = results.hrStatus;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnBeginMsiTransactionBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in LPCWSTR wzTransactionId
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONBEGINMSITRANSACTIONBEGIN_ARGS args = { };
+//     BA_ONBEGINMSITRANSACTIONBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzTransactionId = wzTransactionId;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONBEGINMSITRANSACTIONBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnBeginMsiTransactionBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnBeginMsiTransactionComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in LPCWSTR wzTransactionId,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONBEGINMSITRANSACTIONCOMPLETE_ARGS args = { };
+//     BA_ONBEGINMSITRANSACTIONCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzTransactionId = wzTransactionId;
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONBEGINMSITRANSACTIONCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnBeginMsiTransactionComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheAcquireBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in_z LPWSTR* pwzSource,
+//     __in_z LPWSTR* pwzDownloadUrl,
+//     __in_z_opt LPCWSTR wzPayloadContainerId,
+//     __out BOOTSTRAPPER_CACHE_OPERATION* pCacheOperation
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEACQUIREBEGIN_ARGS args = { };
+//     BA_ONCACHEACQUIREBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     *pCacheOperation = BOOTSTRAPPER_CACHE_OPERATION_NONE;
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.wzSource = *pwzSource;
+//     args.wzDownloadUrl = *pwzDownloadUrl;
+//     args.wzPayloadContainerId = wzPayloadContainerId;
+//     args.recommendation = *pCacheOperation;
+
+//     results.cbSize = sizeof(results);
+//     results.action = *pCacheOperation;
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEACQUIREBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheAcquireBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     else
+//     {
+//         // Verify the BA requested an action that is possible.
+//         if (BOOTSTRAPPER_CACHE_OPERATION_DOWNLOAD == results.action && *pwzDownloadUrl && **pwzDownloadUrl ||
+//             BOOTSTRAPPER_CACHE_OPERATION_EXTRACT == results.action && wzPayloadContainerId ||
+//             BOOTSTRAPPER_CACHE_OPERATION_COPY == results.action ||
+//             BOOTSTRAPPER_CACHE_OPERATION_NONE == results.action)
+//         {
+//             *pCacheOperation = results.action;
+//         }
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheAcquireComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in HRESULT hrStatus,
+//     __inout BOOL* pfRetry
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEACQUIRECOMPLETE_ARGS args = { };
+//     BA_ONCACHEACQUIRECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.hrStatus = hrStatus;
+//     args.recommendation = *pfRetry ? BOOTSTRAPPER_CACHEACQUIRECOMPLETE_ACTION_RETRY : BOOTSTRAPPER_CACHEACQUIRECOMPLETE_ACTION_NONE;
+
+//     results.cbSize = sizeof(results);
+//     results.action = args.recommendation;
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEACQUIRECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheAcquireComplete failed.");
+
+//     if (FAILED(hrStatus))
+//     {
+//         *pfRetry = BOOTSTRAPPER_CACHEACQUIRECOMPLETE_ACTION_RETRY == results.action;
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheAcquireProgress(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in DWORD64 dw64Progress,
+//     __in DWORD64 dw64Total,
+//     __in DWORD dwOverallPercentage
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEACQUIREPROGRESS_ARGS args = { };
+//     BA_ONCACHEACQUIREPROGRESS_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.dw64Progress = dw64Progress;
+//     args.dw64Total = dw64Total;
+//     args.dwOverallPercentage = dwOverallPercentage;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEACQUIREPROGRESS, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheAcquireProgress failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheAcquireResolving(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in_z LPWSTR* rgSearchPaths,
+//     __in DWORD cSearchPaths,
+//     __in BOOL fFoundLocal,
+//     __in DWORD* pdwChosenSearchPath,
+//     __in_z_opt LPWSTR* pwzDownloadUrl,
+//     __in_z_opt LPCWSTR wzPayloadContainerId,
+//     __inout BOOTSTRAPPER_CACHE_RESOLVE_OPERATION* pCacheOperation
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEACQUIRERESOLVING_ARGS args = { };
+//     BA_ONCACHEACQUIRERESOLVING_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.rgSearchPaths = const_cast<LPCWSTR*>(rgSearchPaths);
+//     args.cSearchPaths = cSearchPaths;
+//     args.fFoundLocal = fFoundLocal;
+//     args.dwRecommendedSearchPath = *pdwChosenSearchPath;
+//     args.wzDownloadUrl = *pwzDownloadUrl;
+//     args.recommendation = *pCacheOperation;
+
+//     results.cbSize = sizeof(results);
+//     results.dwChosenSearchPath = *pdwChosenSearchPath;
+//     results.action = *pCacheOperation;
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEACQUIRERESOLVING, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheAcquireResolving failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     else
+//     {
+//         // Verify the BA requested an action that is possible.
+//         if (BOOTSTRAPPER_CACHE_RESOLVE_DOWNLOAD == results.action && *pwzDownloadUrl && **pwzDownloadUrl ||
+//             BOOTSTRAPPER_CACHE_RESOLVE_CONTAINER == results.action && wzPayloadContainerId ||
+//             BOOTSTRAPPER_CACHE_RESOLVE_RETRY == results.action ||
+//             BOOTSTRAPPER_CACHE_RESOLVE_NONE == results.action)
+//         {
+//             *pCacheOperation = results.action;
+//         }
+//         else if (BOOTSTRAPPER_CACHE_RESOLVE_LOCAL == results.action && results.dwChosenSearchPath < cSearchPaths)
+//         {
+//             *pdwChosenSearchPath = results.dwChosenSearchPath;
+//             *pCacheOperation = results.action;
+//         }
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEBEGIN_ARGS args = { };
+//     BA_ONCACHEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHECOMPLETE_ARGS args = { };
+//     BA_ONCACHECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheContainerOrPayloadVerifyBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHECONTAINERORPAYLOADVERIFYBEGIN_ARGS args = { };
+//     BA_ONCACHECONTAINERORPAYLOADVERIFYBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHECONTAINERORPAYLOADVERIFYBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheContainerOrPayloadVerifyBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheContainerOrPayloadVerifyComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHECONTAINERORPAYLOADVERIFYCOMPLETE_ARGS args = { };
+//     BA_ONCACHECONTAINERORPAYLOADVERIFYCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHECONTAINERORPAYLOADVERIFYCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheContainerOrPayloadVerifyComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheContainerOrPayloadVerifyProgress(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in DWORD64 dw64Progress,
+//     __in DWORD64 dw64Total,
+//     __in DWORD dwOverallPercentage
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHECONTAINERORPAYLOADVERIFYPROGRESS_ARGS args = { };
+//     BA_ONCACHECONTAINERORPAYLOADVERIFYPROGRESS_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.dw64Progress = dw64Progress;
+//     args.dw64Total = dw64Total;
+//     args.dwOverallPercentage = dwOverallPercentage;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHECONTAINERORPAYLOADVERIFYPROGRESS, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheContainerOrPayloadVerifyProgress failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCachePackageBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in DWORD cCachePayloads,
+//     __in DWORD64 dw64PackageCacheSize,
+//     __in BOOL fVital
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEPACKAGEBEGIN_ARGS args = { };
+//     BA_ONCACHEPACKAGEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.cCachePayloads = cCachePayloads;
+//     args.dw64PackageCacheSize = dw64PackageCacheSize;
+//     args.fVital = fVital;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPACKAGEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCachePackageBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCachePackageComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in HRESULT hrStatus,
+//     __inout BOOTSTRAPPER_CACHEPACKAGECOMPLETE_ACTION* pAction
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEPACKAGECOMPLETE_ARGS args = { };
+//     BA_ONCACHEPACKAGECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.hrStatus = hrStatus;
+//     args.recommendation = *pAction;
+
+//     results.cbSize = sizeof(results);
+//     results.action = *pAction;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPACKAGECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCachePackageComplete failed.");
+
+//     if (FAILED(hrStatus))
+//     {
+//         *pAction = results.action;
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCachePackageNonVitalValidationFailure(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in HRESULT hrStatus,
+//     __inout BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION* pAction
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEPACKAGENONVITALVALIDATIONFAILURE_ARGS args = { };
+//     BA_ONCACHEPACKAGENONVITALVALIDATIONFAILURE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.hrStatus = hrStatus;
+//     args.recommendation = *pAction;
+
+//     results.cbSize = sizeof(results);
+//     results.action = *pAction;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPACKAGENONVITALVALIDATIONFAILURE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCachePackageNonVitalValidationFailure failed.");
+
+//     switch (results.action)
+//     {
+//     case BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION_NONE: __fallthrough;
+//     case BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION_ACQUIRE:
+//         *pAction = results.action;
+//         break;
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCachePayloadExtractBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEPAYLOADEXTRACTBEGIN_ARGS args = { };
+//     BA_ONCACHEPAYLOADEXTRACTBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzContainerId = wzContainerId;
+//     args.wzPayloadId = wzPayloadId;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPAYLOADEXTRACTBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCachePayloadExtractBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCachePayloadExtractComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEPAYLOADEXTRACTCOMPLETE_ARGS args = { };
+//     BA_ONCACHEPAYLOADEXTRACTCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzContainerId = wzContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPAYLOADEXTRACTCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCachePayloadExtractComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCachePayloadExtractProgress(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in DWORD64 dw64Progress,
+//     __in DWORD64 dw64Total,
+//     __in DWORD dwOverallPercentage
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEPAYLOADEXTRACTPROGRESS_ARGS args = { };
+//     BA_ONCACHEPAYLOADEXTRACTPROGRESS_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzContainerId = wzContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.dw64Progress = dw64Progress;
+//     args.dw64Total = dw64Total;
+//     args.dwOverallPercentage = dwOverallPercentage;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPAYLOADEXTRACTPROGRESS, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCachePayloadExtractProgress failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheVerifyBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEVERIFYBEGIN_ARGS args = { };
+//     BA_ONCACHEVERIFYBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEVERIFYBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheVerifyBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheVerifyComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in HRESULT hrStatus,
+//     __inout BOOTSTRAPPER_CACHEVERIFYCOMPLETE_ACTION* pAction
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEVERIFYCOMPLETE_ARGS args = { };
+//     BA_ONCACHEVERIFYCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.hrStatus = hrStatus;
+//     args.recommendation = *pAction;
+
+//     results.cbSize = sizeof(results);
+//     results.action = *pAction;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEVERIFYCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheVerifyComplete failed.");
+
+//     if (FAILED(hrStatus))
+//     {
+//         *pAction = results.action;
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCacheVerifyProgress(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzPackageOrContainerId,
+//     __in_z_opt LPCWSTR wzPayloadId,
+//     __in DWORD64 dw64Progress,
+//     __in DWORD64 dw64Total,
+//     __in DWORD dwOverallPercentage,
+//     __in BOOTSTRAPPER_CACHE_VERIFY_STEP verifyStep
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCACHEVERIFYPROGRESS_ARGS args = { };
+//     BA_ONCACHEVERIFYPROGRESS_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageOrContainerId = wzPackageOrContainerId;
+//     args.wzPayloadId = wzPayloadId;
+//     args.dw64Progress = dw64Progress;
+//     args.dw64Total = dw64Total;
+//     args.dwOverallPercentage = dwOverallPercentage;
+//     args.verifyStep = verifyStep;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEVERIFYPROGRESS, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCacheVerifyProgress failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCommitMsiTransactionBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in LPCWSTR wzTransactionId
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCOMMITMSITRANSACTIONBEGIN_ARGS args = { };
+//     BA_ONCOMMITMSITRANSACTIONBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzTransactionId = wzTransactionId;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCOMMITMSITRANSACTIONBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCommitMsiTransactionBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnCommitMsiTransactionComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in LPCWSTR wzTransactionId,
+//     __in HRESULT hrStatus,
+//     __in BOOTSTRAPPER_APPLY_RESTART restart,
+//     __inout BOOTSTRAPPER_EXECUTEMSITRANSACTIONCOMPLETE_ACTION* pAction
+// )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONCOMMITMSITRANSACTIONCOMPLETE_ARGS args = { };
+//     BA_ONCOMMITMSITRANSACTIONCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzTransactionId = wzTransactionId;
+//     args.hrStatus = hrStatus;
+//     args.restart = restart;
+//     args.recommendation = *pAction;
+
+//     results.cbSize = sizeof(results);
+//     results.action = *pAction;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONCOMMITMSITRANSACTIONCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnCommitMsiTransactionComplete failed.");
+
+//     *pAction = results.action;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in BOOL fCached,
+//     __in BOOTSTRAPPER_REGISTRATION_TYPE registrationType,
+//     __in DWORD cPackages
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTBEGIN_ARGS args = { };
+//     BA_ONDETECTBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.cPackages = cPackages;
+//     args.registrationType = registrationType;
+//     args.fCached = fCached;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectCompatibleMsiPackage(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzCompatiblePackageId,
+//     __in VERUTIL_VERSION* pCompatiblePackageVersion
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTCOMPATIBLEMSIPACKAGE_ARGS args = { };
+//     BA_ONDETECTCOMPATIBLEMSIPACKAGE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzCompatiblePackageId = wzCompatiblePackageId;
+//     args.wzCompatiblePackageVersion = pCompatiblePackageVersion->sczVersion;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTCOMPATIBLEMSIPACKAGE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectCompatibleMsiPackage failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus,
+//     __in BOOL fEligibleForCleanup
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTCOMPLETE_ARGS args = { };
+//     BA_ONDETECTCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+//     args.fEligibleForCleanup = fEligibleForCleanup;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectForwardCompatibleBundle(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzBundleId,
+//     __in BOOTSTRAPPER_RELATION_TYPE relationType,
+//     __in_z LPCWSTR wzBundleTag,
+//     __in BOOL fPerMachine,
+//     __in VERUTIL_VERSION* pVersion,
+//     __in BOOL fMissingFromCache
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTFORWARDCOMPATIBLEBUNDLE_ARGS args = { };
+//     BA_ONDETECTFORWARDCOMPATIBLEBUNDLE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzBundleId = wzBundleId;
+//     args.relationType = relationType;
+//     args.wzBundleTag = wzBundleTag;
+//     args.fPerMachine = fPerMachine;
+//     args.wzVersion = pVersion->sczVersion;
+//     args.fMissingFromCache = fMissingFromCache;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTFORWARDCOMPATIBLEBUNDLE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectForwardCompatibleBundle failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectMsiFeature(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzFeatureId,
+//     __in BOOTSTRAPPER_FEATURE_STATE state
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTMSIFEATURE_ARGS args = { };
+//     BA_ONDETECTMSIFEATURE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzFeatureId = wzFeatureId;
+//     args.state = state;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTMSIFEATURE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectMsiFeature failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectPackageBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTPACKAGEBEGIN_ARGS args = { };
+//     BA_ONDETECTPACKAGEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTPACKAGEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectPackageBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectPackageComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in HRESULT hrStatus,
+//     __in BOOTSTRAPPER_PACKAGE_STATE state,
+//     __in BOOL fCached
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTPACKAGECOMPLETE_ARGS args = { };
+//     BA_ONDETECTPACKAGECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.hrStatus = hrStatus;
+//     args.state = state;
+//     args.fCached = fCached;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTPACKAGECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectPackageComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectRelatedBundle(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzBundleId,
+//     __in BOOTSTRAPPER_RELATION_TYPE relationType,
+//     __in_z LPCWSTR wzBundleTag,
+//     __in BOOL fPerMachine,
+//     __in VERUTIL_VERSION* pVersion,
+//     __in BOOL fMissingFromCache
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTRELATEDBUNDLE_ARGS args = { };
+//     BA_ONDETECTRELATEDBUNDLE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzBundleId = wzBundleId;
+//     args.relationType = relationType;
+//     args.wzBundleTag = wzBundleTag;
+//     args.fPerMachine = fPerMachine;
+//     args.wzVersion = pVersion->sczVersion;
+//     args.fMissingFromCache = fMissingFromCache;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTRELATEDBUNDLE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectRelatedBundle failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectRelatedBundlePackage(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzBundleId,
+//     __in BOOTSTRAPPER_RELATION_TYPE relationType,
+//     __in BOOL fPerMachine,
+//     __in VERUTIL_VERSION* pVersion
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTRELATEDBUNDLEPACKAGE_ARGS args = { };
+//     BA_ONDETECTRELATEDBUNDLEPACKAGE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzBundleId = wzBundleId;
+//     args.relationType = relationType;
+//     args.fPerMachine = fPerMachine;
+//     args.wzVersion = pVersion->sczVersion;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTRELATEDBUNDLEPACKAGE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectRelatedBundlePackage failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectRelatedMsiPackage(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzUpgradeCode,
+//     __in_z LPCWSTR wzProductCode,
+//     __in BOOL fPerMachine,
+//     __in VERUTIL_VERSION* pVersion,
+//     __in BOOTSTRAPPER_RELATED_OPERATION operation
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTRELATEDMSIPACKAGE_ARGS args = { };
+//     BA_ONDETECTRELATEDMSIPACKAGE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzUpgradeCode = wzUpgradeCode;
+//     args.wzProductCode = wzProductCode;
+//     args.fPerMachine = fPerMachine;
+//     args.wzVersion = pVersion->sczVersion;
+//     args.operation = operation;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTRELATEDMSIPACKAGE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectRelatedMsiPackage failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectPatchTarget(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzProductCode,
+//     __in BOOTSTRAPPER_PACKAGE_STATE patchState
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTPATCHTARGET_ARGS args = { };
+//     BA_ONDETECTPATCHTARGET_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzProductCode = wzProductCode;
+//     args.patchState = patchState;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTPATCHTARGET, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectPatchTarget failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectUpdate(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z_opt LPCWSTR wzUpdateLocation,
+//     __in DWORD64 dw64Size,
+//     __in_z_opt LPCWSTR wzHash,
+//     __in BOOTSTRAPPER_UPDATE_HASH_TYPE hashAlgorithm,
+//     __in VERUTIL_VERSION* pVersion,
+//     __in_z_opt LPCWSTR wzTitle,
+//     __in_z_opt LPCWSTR wzSummary,
+//     __in_z_opt LPCWSTR wzContentType,
+//     __in_z_opt LPCWSTR wzContent,
+//     __inout BOOL* pfStopProcessingUpdates
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTUPDATE_ARGS args = { };
+//     BA_ONDETECTUPDATE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzUpdateLocation = wzUpdateLocation;
+//     args.dw64Size = dw64Size;
+//     args.wzHash = wzHash;
+//     args.hashAlgorithm = hashAlgorithm;
+//     args.wzVersion = pVersion->sczVersion;
+//     args.wzTitle = wzTitle;
+//     args.wzSummary = wzSummary;
+//     args.wzContentType = wzContentType;
+//     args.wzContent = wzContent;
+
+//     results.cbSize = sizeof(results);
+//     results.fStopProcessingUpdates = *pfStopProcessingUpdates;
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTUPDATE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectUpdate failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+//     *pfStopProcessingUpdates = results.fStopProcessingUpdates;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectUpdateBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzUpdateLocation,
+//     __inout BOOL* pfSkip
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTUPDATEBEGIN_ARGS args = { };
+//     BA_ONDETECTUPDATEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzUpdateLocation = wzUpdateLocation;
+
+//     results.cbSize = sizeof(results);
+//     results.fSkip = *pfSkip;
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTUPDATEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectUpdateBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pfSkip = results.fSkip;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnDetectUpdateComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus,
+//     __inout BOOL* pfIgnoreError
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONDETECTUPDATECOMPLETE_ARGS args = { };
+//     BA_ONDETECTUPDATECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+//     results.fIgnoreError = *pfIgnoreError;
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTUPDATECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnDetectUpdateComplete failed.");
+
+//     if (FAILED(hrStatus))
+//     {
+//         *pfIgnoreError = results.fIgnoreError;
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnElevateBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONELEVATEBEGIN_ARGS args = { };
+//     BA_ONELEVATEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONELEVATEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnElevateBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnElevateComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONELEVATECOMPLETE_ARGS args = { };
+//     BA_ONELEVATECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONELEVATECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnElevateComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnError(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in BOOTSTRAPPER_ERROR_TYPE errorType,
+//     __in_z_opt LPCWSTR wzPackageId,
+//     __in DWORD dwCode,
+//     __in_z_opt LPCWSTR wzError,
+//     __in DWORD dwUIHint,
+//     __in DWORD cData,
+//     __in_ecount_z_opt(cData) LPCWSTR* rgwzData,
+//     __inout int* pnResult
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONERROR_ARGS args = { };
+//     BA_ONERROR_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.errorType = errorType;
+//     args.wzPackageId = wzPackageId;
+//     args.dwCode = dwCode;
+//     args.wzError = wzError;
+//     args.dwUIHint = dwUIHint;
+//     args.cData = cData;
+//     args.rgwzData = rgwzData;
+//     args.nRecommendation = *pnResult;
+
+//     results.cbSize = sizeof(results);
+//     results.nResult = *pnResult;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONERROR, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnError failed.");
+
+//     *pnResult = results.nResult;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnExecuteBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in DWORD cExecutingPackages
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONEXECUTEBEGIN_ARGS args = { };
+//     BA_ONEXECUTEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.cExecutingPackages = cExecutingPackages;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnExecuteBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnExecuteComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONEXECUTECOMPLETE_ARGS args = { };
+//     BA_ONEXECUTECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnExecuteComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnExecuteFilesInUse(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in DWORD cFiles,
+//     __in_ecount_z_opt(cFiles) LPCWSTR* rgwzFiles,
+//     __in BOOTSTRAPPER_FILES_IN_USE_TYPE source,
+//     __inout int* pnResult
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONEXECUTEFILESINUSE_ARGS args = { };
+//     BA_ONEXECUTEFILESINUSE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.cFiles = cFiles;
+//     args.rgwzFiles = rgwzFiles;
+//     args.nRecommendation = *pnResult;
+//     args.source = source;
+
+//     results.cbSize = sizeof(results);
+//     results.nResult = *pnResult;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEFILESINUSE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnExecuteFilesInUse failed.");
+
+//     *pnResult = results.nResult;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnExecuteMsiMessage(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in INSTALLMESSAGE messageType,
+//     __in DWORD dwUIHint,
+//     __in_z LPCWSTR wzMessage,
+//     __in DWORD cData,
+//     __in_ecount_z_opt(cData) LPCWSTR* rgwzData,
+//     __inout int* pnResult
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONEXECUTEMSIMESSAGE_ARGS args = { };
+//     BA_ONEXECUTEMSIMESSAGE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.messageType = messageType;
+//     args.dwUIHint = dwUIHint;
+//     args.wzMessage = wzMessage;
+//     args.cData = cData;
+//     args.rgwzData = rgwzData;
+//     args.nRecommendation = *pnResult;
+
+//     results.cbSize = sizeof(results);
+//     results.nResult = *pnResult;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEMSIMESSAGE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnExecuteMsiMessage failed.");
+
+//     *pnResult = results.nResult;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnExecutePackageBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in BOOL fExecute,
+//     __in BOOTSTRAPPER_ACTION_STATE action,
+//     __in INSTALLUILEVEL uiLevel,
+//     __in BOOL fDisableExternalUiHandler
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONEXECUTEPACKAGEBEGIN_ARGS args = { };
+//     BA_ONEXECUTEPACKAGEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.fExecute = fExecute;
+//     args.action = action;
+//     args.uiLevel = uiLevel;
+//     args.fDisableExternalUiHandler = fDisableExternalUiHandler;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPACKAGEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnExecutePackageBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnExecutePackageComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in HRESULT hrStatus,
+//     __in BOOTSTRAPPER_APPLY_RESTART restart,
+//     __inout BOOTSTRAPPER_EXECUTEPACKAGECOMPLETE_ACTION* pAction
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONEXECUTEPACKAGECOMPLETE_ARGS args = { };
+//     BA_ONEXECUTEPACKAGECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.hrStatus = hrStatus;
+//     args.restart = restart;
+//     args.recommendation = *pAction;
+
+//     results.cbSize = sizeof(results);
+//     results.action = *pAction;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPACKAGECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnExecutePackageComplete failed.");
+
+//     *pAction = results.action;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnExecutePatchTarget(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzTargetProductCode
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONEXECUTEPATCHTARGET_ARGS args = { };
+//     BA_ONEXECUTEPATCHTARGET_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzTargetProductCode = wzTargetProductCode;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPATCHTARGET, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnExecutePatchTarget failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// BAAPI UserExperienceOnExecuteProcessCancel(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in DWORD dwProcessId,
+//     __inout BOOTSTRAPPER_EXECUTEPROCESSCANCEL_ACTION* pAction
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONEXECUTEPROCESSCANCEL_ARGS args = { };
+//     BA_ONEXECUTEPROCESSCANCEL_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.dwProcessId = dwProcessId;
+//     args.recommendation = *pAction;
+
+//     results.cbSize = sizeof(results);
+//     results.action = *pAction;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPROCESSCANCEL, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnExecuteProcessCancel failed.");
+
+//     *pAction = results.action;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnExecuteProgress(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in DWORD dwProgressPercentage,
+//     __in DWORD dwOverallPercentage,
+//     __out int* pnResult
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONEXECUTEPROGRESS_ARGS args = { };
+//     BA_ONEXECUTEPROGRESS_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.dwProgressPercentage = dwProgressPercentage;
+//     args.dwOverallPercentage = dwOverallPercentage;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPROGRESS, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnExecuteProgress failed.");
+
+// LExit:
+//     if (FAILED(hr))
+//     {
+//         *pnResult = IDERROR;
+//     }
+//     else if (results.fCancel)
+//     {
+//         *pnResult = IDCANCEL;
+//     }
+//     else
+//     {
+//         *pnResult = IDNOACTION;
+//     }
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnLaunchApprovedExeBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONLAUNCHAPPROVEDEXEBEGIN_ARGS args = { };
+//     BA_ONLAUNCHAPPROVEDEXEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONLAUNCHAPPROVEDEXEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnLaunchApprovedExeBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnLaunchApprovedExeComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus,
+//     __in DWORD dwProcessId
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONLAUNCHAPPROVEDEXECOMPLETE_ARGS args = { };
+//     BA_ONLAUNCHAPPROVEDEXECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+//     args.dwProcessId = dwProcessId;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONLAUNCHAPPROVEDEXECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnLaunchApprovedExeComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPauseAUBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPAUSEAUTOMATICUPDATESBEGIN_ARGS args = { };
+//     BA_ONPAUSEAUTOMATICUPDATESBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPAUSEAUTOMATICUPDATESBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPauseAUBegin failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPauseAUComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPAUSEAUTOMATICUPDATESCOMPLETE_ARGS args = { };
+//     BA_ONPAUSEAUTOMATICUPDATESCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPAUSEAUTOMATICUPDATESCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPauseAUComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in DWORD cPackages
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANBEGIN_ARGS args = { };
+//     BA_ONPLANBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.cPackages = cPackages;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanCompatibleMsiPackageBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzCompatiblePackageId,
+//     __in VERUTIL_VERSION* pCompatiblePackageVersion,
+//     __inout BOOL* pfRequested
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANCOMPATIBLEMSIPACKAGEBEGIN_ARGS args = { };
+//     BA_ONPLANCOMPATIBLEMSIPACKAGEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzCompatiblePackageId = wzCompatiblePackageId;
+//     args.wzCompatiblePackageVersion = pCompatiblePackageVersion->sczVersion;
+//     args.fRecommendedRemove = *pfRequested;
+
+//     results.cbSize = sizeof(results);
+//     results.fRequestRemove = *pfRequested;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANCOMPATIBLEMSIPACKAGEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanCompatibleMsiPackageBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pfRequested = results.fRequestRemove;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanCompatibleMsiPackageComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzCompatiblePackageId,
+//     __in HRESULT hrStatus,
+//     __in BOOL fRequested
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANCOMPATIBLEMSIPACKAGECOMPLETE_ARGS args = { };
+//     BA_ONPLANCOMPATIBLEMSIPACKAGECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzCompatiblePackageId = wzCompatiblePackageId;
+//     args.hrStatus = hrStatus;
+//     args.fRequestedRemove = fRequested;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANCOMPATIBLEMSIPACKAGECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanCompatibleMsiPackageComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanMsiFeature(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzFeatureId,
+//     __inout BOOTSTRAPPER_FEATURE_STATE* pRequestedState
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANMSIFEATURE_ARGS args = { };
+//     BA_ONPLANMSIFEATURE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzFeatureId = wzFeatureId;
+//     args.recommendedState = *pRequestedState;
+
+//     results.cbSize = sizeof(results);
+//     results.requestedState = *pRequestedState;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANMSIFEATURE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanMsiFeature failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pRequestedState = results.requestedState;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANCOMPLETE_ARGS args = { };
+//     BA_ONPLANCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessageFromInactiveEngine(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanForwardCompatibleBundle(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzBundleId,
+//     __in BOOTSTRAPPER_RELATION_TYPE relationType,
+//     __in_z LPCWSTR wzBundleTag,
+//     __in BOOL fPerMachine,
+//     __in VERUTIL_VERSION* pVersion,
+//     __inout BOOL* pfIgnoreBundle
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANFORWARDCOMPATIBLEBUNDLE_ARGS args = { };
+//     BA_ONPLANFORWARDCOMPATIBLEBUNDLE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzBundleId = wzBundleId;
+//     args.relationType = relationType;
+//     args.wzBundleTag = wzBundleTag;
+//     args.fPerMachine = fPerMachine;
+//     args.wzVersion = pVersion->sczVersion;
+//     args.fRecommendedIgnoreBundle = *pfIgnoreBundle;
+
+//     results.cbSize = sizeof(results);
+//     results.fIgnoreBundle = *pfIgnoreBundle;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANFORWARDCOMPATIBLEBUNDLE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanForwardCompatibleBundle failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pfIgnoreBundle = results.fIgnoreBundle;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanMsiPackage(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in BOOL fExecute,
+//     __in BOOTSTRAPPER_ACTION_STATE action,
+//     __inout BURN_MSI_PROPERTY* pActionMsiProperty,
+//     __inout INSTALLUILEVEL* pUiLevel,
+//     __inout BOOL* pfDisableExternalUiHandler,
+//     __inout BOOTSTRAPPER_MSI_FILE_VERSIONING* pFileVersioning
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANMSIPACKAGE_ARGS args = { };
+//     BA_ONPLANMSIPACKAGE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.fExecute = fExecute;
+//     args.action = action;
+//     args.recommendedFileVersioning = *pFileVersioning;
+
+//     results.cbSize = sizeof(results);
+//     results.actionMsiProperty = *pActionMsiProperty;
+//     results.uiLevel = *pUiLevel;
+//     results.fDisableExternalUiHandler = *pfDisableExternalUiHandler;
+//     results.fileVersioning = args.recommendedFileVersioning;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANMSIPACKAGE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanMsiPackage failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pActionMsiProperty = results.actionMsiProperty;
+//     *pUiLevel = results.uiLevel;
+//     *pfDisableExternalUiHandler = results.fDisableExternalUiHandler;
+//     *pFileVersioning = results.fileVersioning;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlannedCompatiblePackage(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzCompatiblePackageId,
+//     __in BOOL fRemove
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANNEDCOMPATIBLEPACKAGE_ARGS args = { };
+//     BA_ONPLANNEDCOMPATIBLEPACKAGE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzCompatiblePackageId = wzCompatiblePackageId;
+//     args.fRemove = fRemove;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANNEDCOMPATIBLEPACKAGE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlannedCompatiblePackage failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlannedPackage(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in BOOTSTRAPPER_ACTION_STATE execute,
+//     __in BOOTSTRAPPER_ACTION_STATE rollback,
+//     __in BOOL fPlannedCache,
+//     __in BOOL fPlannedUncache
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANNEDPACKAGE_ARGS args = { };
+//     BA_ONPLANNEDPACKAGE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.execute = execute;
+//     args.rollback = rollback;
+//     args.fPlannedCache = fPlannedCache;
+//     args.fPlannedUncache = fPlannedUncache;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANNEDPACKAGE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlannedPackage failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanPackageBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in BOOTSTRAPPER_PACKAGE_STATE state,
+//     __in BOOL fCached,
+//     __in BOOTSTRAPPER_PACKAGE_CONDITION_RESULT installCondition,
+//     __in BOOTSTRAPPER_PACKAGE_CONDITION_RESULT repairCondition,
+//     __inout BOOTSTRAPPER_REQUEST_STATE* pRequestedState,
+//     __inout BOOTSTRAPPER_CACHE_TYPE* pRequestedCacheType
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANPACKAGEBEGIN_ARGS args = { };
+//     BA_ONPLANPACKAGEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.state = state;
+//     args.fCached = fCached;
+//     args.installCondition = installCondition;
+//     args.repairCondition = repairCondition;
+//     args.recommendedState = *pRequestedState;
+//     args.recommendedCacheType = *pRequestedCacheType;
+
+//     results.cbSize = sizeof(results);
+//     results.requestedState = *pRequestedState;
+//     results.requestedCacheType = *pRequestedCacheType;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANPACKAGEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanPackageBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pRequestedState = results.requestedState;
+
+//     if (BOOTSTRAPPER_CACHE_TYPE_REMOVE <= results.requestedCacheType && BOOTSTRAPPER_CACHE_TYPE_FORCE >= results.requestedCacheType)
+//     {
+//         *pRequestedCacheType = results.requestedCacheType;
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanPackageComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in HRESULT hrStatus,
+//     __in BOOTSTRAPPER_REQUEST_STATE requested
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANPACKAGECOMPLETE_ARGS args = { };
+//     BA_ONPLANPACKAGECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.hrStatus = hrStatus;
+//     args.requested = requested;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANPACKAGECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanPackageComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanRelatedBundle(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzBundleId,
+//     __inout BOOTSTRAPPER_REQUEST_STATE* pRequestedState
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANRELATEDBUNDLE_ARGS args = { };
+//     BA_ONPLANRELATEDBUNDLE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzBundleId = wzBundleId;
+//     args.recommendedState = *pRequestedState;
+
+//     results.cbSize = sizeof(results);
+//     results.requestedState = *pRequestedState;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANRELATEDBUNDLE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanRelatedBundle failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pRequestedState = results.requestedState;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanRelatedBundleType(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzBundleId,
+//     __inout BOOTSTRAPPER_RELATED_BUNDLE_PLAN_TYPE* pRequestedType
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANRELATEDBUNDLETYPE_ARGS args = { };
+//     BA_ONPLANRELATEDBUNDLETYPE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzBundleId = wzBundleId;
+//     args.recommendedType = *pRequestedType;
+
+//     results.cbSize = sizeof(results);
+//     results.requestedType = *pRequestedType;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANRELATEDBUNDLETYPE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanRelatedBundleType failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pRequestedType = results.requestedType;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanRestoreRelatedBundle(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzBundleId,
+//     __inout BOOTSTRAPPER_REQUEST_STATE* pRequestedState
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANRESTORERELATEDBUNDLE_ARGS args = { };
+//     BA_ONPLANRESTORERELATEDBUNDLE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzBundleId = wzBundleId;
+//     args.recommendedState = *pRequestedState;
+
+//     results.cbSize = sizeof(results);
+//     results.requestedState = *pRequestedState;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANRESTORERELATEDBUNDLE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanRestoreRelatedBundle failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pRequestedState = results.requestedState;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanRollbackBoundary(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzRollbackBoundaryId,
+//     __inout BOOL* pfTransaction
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANROLLBACKBOUNDARY_ARGS args = { };
+//     BA_ONPLANROLLBACKBOUNDARY_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzRollbackBoundaryId = wzRollbackBoundaryId;
+//     args.fRecommendedTransaction = *pfTransaction;
+
+//     results.cbSize = sizeof(results);
+//     results.fTransaction = *pfTransaction;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANROLLBACKBOUNDARY, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanRollbackBoundary failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pfTransaction = results.fTransaction;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnPlanPatchTarget(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in_z LPCWSTR wzPackageId,
+//     __in_z LPCWSTR wzProductCode,
+//     __inout BOOTSTRAPPER_REQUEST_STATE* pRequestedState
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPLANPATCHTARGET_ARGS args = { };
+//     BA_ONPLANPATCHTARGET_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzPackageId = wzPackageId;
+//     args.wzProductCode = wzProductCode;
+//     args.recommendedState = *pRequestedState;
+
+//     results.cbSize = sizeof(results);
+//     results.requestedState = *pRequestedState;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANPATCHTARGET, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnPlanPatchTarget failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     *pRequestedState = results.requestedState;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnProgress(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in BOOL fRollback,
+//     __in DWORD dwProgressPercentage,
+//     __in DWORD dwOverallPercentage
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONPROGRESS_ARGS args = { };
+//     BA_ONPROGRESS_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.dwProgressPercentage = dwProgressPercentage;
+//     args.dwOverallPercentage = dwOverallPercentage;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONPROGRESS, &args, args.cbSize, &result);
+//     hr = FilterExecuteResult(pUserExperience, hr, fRollback, results.fCancel, L"OnProgress");
+
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnRegisterBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __inout BOOTSTRAPPER_REGISTRATION_TYPE* pRegistrationType
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONREGISTERBEGIN_ARGS args = { };
+//     BA_ONREGISTERBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.recommendedRegistrationType = *pRegistrationType;
+
+//     results.cbSize = sizeof(results);
+//     results.registrationType = *pRegistrationType;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONREGISTERBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnRegisterBegin failed.");
+
+//     if (results.fCancel)
+//     {
+//         hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//     }
+//     else if (BOOTSTRAPPER_REGISTRATION_TYPE_NONE < results.registrationType && BOOTSTRAPPER_REGISTRATION_TYPE_FULL >= results.registrationType)
+//     {
+//         *pRegistrationType = results.registrationType;
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnRegisterComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONREGISTERCOMPLETE_ARGS args = { };
+//     BA_ONREGISTERCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONREGISTERCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnRegisterComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnRollbackMsiTransactionBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in LPCWSTR wzTransactionId
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONROLLBACKMSITRANSACTIONBEGIN_ARGS args = { };
+//     BA_ONROLLBACKMSITRANSACTIONBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzTransactionId = wzTransactionId;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONROLLBACKMSITRANSACTIONBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnRollbackMsiTransactionBegin failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnRollbackMsiTransactionComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in LPCWSTR wzTransactionId,
+//     __in HRESULT hrStatus,
+//     __in BOOTSTRAPPER_APPLY_RESTART restart,
+//     __inout BOOTSTRAPPER_EXECUTEMSITRANSACTIONCOMPLETE_ACTION *pAction
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONROLLBACKMSITRANSACTIONCOMPLETE_ARGS args = { };
+//     BA_ONROLLBACKMSITRANSACTIONCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.wzTransactionId = wzTransactionId;
+//     args.hrStatus = hrStatus;
+//     args.restart = restart;
+//     args.recommendation = *pAction;
+
+//     results.cbSize = sizeof(results);
+//     results.action = *pAction;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONROLLBACKMSITRANSACTIONCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnRollbackMsiTransactionComplete failed.");
+
+//     *pAction = results.action;
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnSetUpdateBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONSETUPDATEBEGIN_ARGS args = { };
+//     BA_ONSETUPDATEBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSETUPDATEBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnSetUpdateBegin failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnSetUpdateComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus,
+//     __in_z_opt LPCWSTR wzPreviousPackageId,
+//     __in_z_opt LPCWSTR wzNewPackageId
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONSETUPDATECOMPLETE_ARGS args = { };
+//     BA_ONSETUPDATECOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+//     args.wzPreviousPackageId = wzPreviousPackageId;
+//     args.wzNewPackageId = wzNewPackageId;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSETUPDATECOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnSetUpdateComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnSystemRestorePointBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONSYSTEMRESTOREPOINTBEGIN_ARGS args = { };
+//     BA_ONSYSTEMRESTOREPOINTBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSYSTEMRESTOREPOINTBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnSystemRestorePointBegin failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnSystemRestorePointComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONSYSTEMRESTOREPOINTCOMPLETE_ARGS args = { };
+//     BA_ONSYSTEMRESTOREPOINTCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONSYSTEMRESTOREPOINTCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnSystemRestorePointComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnUnregisterBegin(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __inout BOOTSTRAPPER_REGISTRATION_TYPE* pRegistrationType
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONUNREGISTERBEGIN_ARGS args = { };
+//     BA_ONUNREGISTERBEGIN_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.recommendedRegistrationType = *pRegistrationType;
+
+//     results.cbSize = sizeof(results);
+//     results.registrationType = *pRegistrationType;
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONUNREGISTERBEGIN, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnUnregisterBegin failed.");
+
+//     if (BOOTSTRAPPER_REGISTRATION_TYPE_NONE < results.registrationType && BOOTSTRAPPER_REGISTRATION_TYPE_FULL >= results.registrationType)
+//     {
+//         *pRegistrationType = results.registrationType;
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// EXTERN_C BAAPI UserExperienceOnUnregisterComplete(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus
+//     )
+// {
+//     HRESULT hr = S_OK;
+//     BA_ONUNREGISTERCOMPLETE_ARGS args = { };
+//     BA_ONUNREGISTERCOMPLETE_RESULTS results = { };
+//     PIPE_RPC_RESULT result = { };
+
+//     args.cbSize = sizeof(args);
+//     args.hrStatus = hrStatus;
+
+//     results.cbSize = sizeof(results);
+
+//     hr = SendBAMessage(pUserExperience, BOOTSTRAPPER_APPLICATION_MESSAGE_ONUNREGISTERCOMPLETE, &args, args.cbSize, &result);
+//     ExitOnFailure(hr, "BA OnUnregisterComplete failed.");
+
+// LExit:
+//     return hr;
+// }
+
+// extern "C" int UserExperienceCheckExecuteResult(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in BOOL fRollback,
+//     __in DWORD dwAllowedResults,
+//     __in int nResult
+//     )
+// {
+//     // Do not allow canceling while rolling back.
+//     if (fRollback && (IDCANCEL == nResult || IDABORT == nResult))
+//     {
+//         nResult = IDNOACTION;
+//     }
+//     else if (FAILED(pUserExperience->hrApplyError) && !fRollback) // if we failed cancel except not during rollback.
+//     {
+//         nResult = IDCANCEL;
+//     }
+
+//     nResult = FilterResult(dwAllowedResults, nResult);
+//     return nResult;
+// }
+
+// extern "C" HRESULT UserExperienceInterpretExecuteResult(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in BOOL fRollback,
+//     __in DWORD dwAllowedResults,
+//     __in int nResult
+//     )
+// {
+//     HRESULT hr = S_OK;
+
+//     // If we failed return that error unless this is rollback which should roll on.
+//     if (FAILED(pUserExperience->hrApplyError) && !fRollback)
+//     {
+//         hr = pUserExperience->hrApplyError;
+//     }
+//     else
+//     {
+//         int nCheckedResult = UserExperienceCheckExecuteResult(pUserExperience, fRollback, dwAllowedResults, nResult);
+//         hr = IDOK == nCheckedResult || IDNOACTION == nCheckedResult ? S_OK : IDCANCEL == nCheckedResult || IDABORT == nCheckedResult ? HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT) : HRESULT_FROM_WIN32(ERROR_INSTALL_FAILURE);
+//     }
+
+//     return hr;
+// }
+
+
+// // internal functions
+
+// static int FilterResult(
+//     __in DWORD dwAllowedResults,
+//     __in int nResult
+//     )
+// {
+//     if (IDNOACTION == nResult || IDERROR == nResult) // do nothing and errors pass through.
+//     {
+//     }
+//     else
+//     {
+//         switch (dwAllowedResults)
+//         {
+//         case MB_OK:
+//             nResult = IDOK;
+//             break;
+
+//         case MB_OKCANCEL:
+//             if (IDOK == nResult || IDYES == nResult)
+//             {
+//                 nResult = IDOK;
+//             }
+//             else if (IDCANCEL == nResult || IDABORT == nResult || IDNO == nResult)
+//             {
+//                 nResult = IDCANCEL;
+//             }
+//             else
+//             {
+//                 nResult = IDNOACTION;
+//             }
+//             break;
+
+//         case MB_ABORTRETRYIGNORE:
+//             if (IDCANCEL == nResult || IDABORT == nResult)
+//             {
+//                 nResult = IDABORT;
+//             }
+//             else if (IDRETRY == nResult || IDTRYAGAIN == nResult)
+//             {
+//                 nResult = IDRETRY;
+//             }
+//             else if (IDIGNORE == nResult)
+//             {
+//                 nResult = IDIGNORE;
+//             }
+//             else
+//             {
+//                 nResult = IDNOACTION;
+//             }
+//             break;
+
+//         case MB_YESNO:
+//             if (IDOK == nResult || IDYES == nResult)
+//             {
+//                 nResult = IDYES;
+//             }
+//             else if (IDCANCEL == nResult || IDABORT == nResult || IDNO == nResult)
+//             {
+//                 nResult = IDNO;
+//             }
+//             else
+//             {
+//                 nResult = IDNOACTION;
+//             }
+//             break;
+
+//         case MB_YESNOCANCEL:
+//             if (IDOK == nResult || IDYES == nResult)
+//             {
+//                 nResult = IDYES;
+//             }
+//             else if (IDNO == nResult)
+//             {
+//                 nResult = IDNO;
+//             }
+//             else if (IDCANCEL == nResult || IDABORT == nResult)
+//             {
+//                 nResult = IDCANCEL;
+//             }
+//             else
+//             {
+//                 nResult = IDNOACTION;
+//             }
+//             break;
+
+//         case MB_RETRYCANCEL:
+//             if (IDRETRY == nResult || IDTRYAGAIN == nResult)
+//             {
+//                 nResult = IDRETRY;
+//             }
+//             else if (IDCANCEL == nResult || IDABORT == nResult)
+//             {
+//                 nResult = IDABORT;
+//             }
+//             else
+//             {
+//                 nResult = IDNOACTION;
+//             }
+//             break;
+
+//         case MB_CANCELTRYCONTINUE:
+//             if (IDCANCEL == nResult || IDABORT == nResult)
+//             {
+//                 nResult = IDABORT;
+//             }
+//             else if (IDRETRY == nResult || IDTRYAGAIN == nResult)
+//             {
+//                 nResult = IDRETRY;
+//             }
+//             else if (IDCONTINUE == nResult || IDIGNORE == nResult)
+//             {
+//                 nResult = IDCONTINUE;
+//             }
+//             else
+//             {
+//                 nResult = IDNOACTION;
+//             }
+//             break;
+
+//         case BURN_MB_RETRYTRYAGAIN: // custom return code.
+//             if (IDRETRY != nResult && IDTRYAGAIN != nResult)
+//             {
+//                 nResult = IDNOACTION;
+//             }
+//             break;
+
+//         default:
+//             AssertSz(FALSE, "Unknown allowed results.");
+//             break;
+//         }
+//     }
+
+//     return nResult;
+// }
+
+// // This filters the BA's responses to events during apply.
+// // If an apply thread failed, then return its error so this thread will bail out.
+// // During rollback, the BA can't cancel.
+// static HRESULT FilterExecuteResult(
+//     __in BURN_USER_EXPERIENCE* pUserExperience,
+//     __in HRESULT hrStatus,
+//     __in BOOL fRollback,
+//     __in BOOL fCancel,
+//     __in LPCWSTR sczEventName
+//     )
+// {
+//     HRESULT hr = hrStatus;
+//     HRESULT hrApplyError = pUserExperience->hrApplyError; // make sure to use the same value for the whole method, since it can be changed in other threads.
+
+//     // If we failed return that error unless this is rollback which should roll on.
+//     if (FAILED(hrApplyError) && !fRollback)
+//     {
+//         hr = hrApplyError;
+//     }
+//     else if (fRollback)
+//     {
+//         if (fCancel)
+//         {
+//             LogId(REPORT_STANDARD, MSG_APPLY_CANCEL_IGNORED_DURING_ROLLBACK, sczEventName);
+//         }
+//         // TODO: since cancel isn't allowed, should the BA's HRESULT be ignored as well?
+//         // In the previous code, they could still alter rollback by returning IDERROR.
+//     }
+//     else
+//     {
+//         ExitOnFailure(hr, "BA %ls failed.", sczEventName);
+
+//         if (fCancel)
+//         {
+//             hr = HRESULT_FROM_WIN32(ERROR_INSTALL_USEREXIT);
+//         }
+//     }
+
+// LExit:
+//     return hr;
+// }
+
+// static HRESULT SendBAMessage(
+//     __in BURN_USER_EXPERIENCE* /*pUserExperience*/,
+//     __in BOOTSTRAPPER_APPLICATION_MESSAGE /*message*/,
+//     __in_bcount(cbArgs) const LPVOID /*pvArgs*/,
+//     __in DWORD /*cbArgs*/,
+//     __in PIPE_RPC_RESULT* /*pResult*/
+//     )
+// {
+// // //     HRESULT hr = S_OK;
+// // //     // DWORD rgResultAndSize[2] = { };
+// // //     // DWORD cbSize = 0;
+// // //     // LPVOID pvData = NULL;
+// // //     // DWORD cbData = 0;
+
+// // //     //if (!pUserExperience->hUXModule)
+// // //     if (!PipeRpcInitialized(&pUserExperience->hBARpcPipe))
+// // //     {
+// // //         ExitFunction();
+// // //     }
+
+// // //     //hr = pUserExperience->pfnBAProc(message, pvArgs, pvResults, pUserExperience->pvBAProcContext);
+// // //     //if (hr == E_NOTIMPL)
+// // //     //{
+// // //     //    hr = S_OK;
+// // //     //}
+
+// // //     // Send the message.
+// // //     // hr = PipeWriteMessage(hPipe, message, pvArgs, cbArgs);
+// // //     hr = PipeRpcRequest(&pUserExperience->hBARpcPipe, message, pvArgs, cbArgs, pResult);
+// // //     ExitOnFailure(hr, "Failed to write message to BA.");
+
+// // // #if TODO_DELETE
+// // //     // Read the result and size of response.
+// // //     hr = FileReadHandle(hPipe, reinterpret_cast<LPBYTE>(rgResultAndSize), sizeof(rgResultAndSize));
+// // //     ExitOnFailure(hr, "Failed to read result and size of message.");
+
+// // //     pResult->hr = rgResultAndSize[0];
+// // //     cbSize = rgResultAndSize[1];
+
+// // //     // Ensure the message size isn't "too big".
+// // //     if (cbSize > MAX_SIZE_BA_RESPONSE)
+// // //     {
+// // //         hr = E_INVALIDDATA;
+// // //         ExitOnRootFailure(hr, "BA sent too much data in response.");
+// // //     }
+// // //     else if (cbSize > sizeof(DWORD)) // if there is data beyond the size of the response struct, read it.
+// // //     {
+// // //         cbData = cbSize - sizeof(DWORD);
+
+// // //         pvData = MemAlloc(cbData, TRUE);
+// // //         ExitOnNull(pvData, hr, E_OUTOFMEMORY, "Failed to allocate memory for BA results.");
+
+// // //         hr = FileReadHandle(hPipe, reinterpret_cast<LPBYTE>(pvData), cbData);
+// // //         ExitOnFailure(hr, "Failed to read result and size of message.");
+// // //     }
+
+// // //     pResult->cbSize = cbSize;
+// // //     pResult->cbData = cbData;
+// // //     pResult->pvData = pvData;
+// // //     pvData = NULL;
+// // // #endif
+
+// // //     hr = pResult->hr;
+// // //     ExitOnFailure(hr, "BA reported failure.");
+
+// // // LExit:
+// // //     // ReleaseMem(pvData);
+
+// // //     return hr;
+//     return E_NOTIMPL;
+// }
+
+// static HRESULT SendBAMessageFromInactiveEngine(
+//     __in BURN_USER_EXPERIENCE* /*pUserExperience*/,
+//     __in BOOTSTRAPPER_APPLICATION_MESSAGE /*message*/,
+//     __in_bcount(cbArgs) const LPVOID /*pvArgs*/,
+//     __in DWORD /*cbArgs*/,
+//     __in PIPE_RPC_RESULT* /*pResult*/
+//     )
+// {
+// // //     HRESULT hr = S_OK;
+
+// // //     //if (!pUserExperience->hUXModule)
+// // //     if (!PipeRpcInitialized(&pUserExperience->hBARpcPipe))
+// // //     {
+// // //         ExitFunction();
+// // //     }
+
+// // //     UserExperienceDeactivateEngine(pUserExperience);
+
+// // //     hr = SendBAMessage(pUserExperience, message, pvArgs, cbArgs, pResult);
+
+// // //     UserExperienceActivateEngine(pUserExperience);
+
+// // // LExit:
+// // //     return hr;
+//     return E_NOTIMPL;
+// }