3 files changed, 29 insertions, 0 deletions

diff --git a/src/WixToolset.BootstrapperCore.Native/inc/BootstrapperEngine.h b/src/WixToolset.BootstrapperCore.Native/inc/BootstrapperEngine.h
index a6a87622..13229c29 100644
--- a/src/WixToolset.BootstrapperCore.Native/inc/BootstrapperEngine.h
+++ b/src/WixToolset.BootstrapperCore.Native/inc/BootstrapperEngine.h
@@ -124,6 +124,7 @@ enum BOOTSTRAPPER_ENGINE_MESSAGE
     BOOTSTRAPPER_ENGINE_MESSAGE_APPLY,
     BOOTSTRAPPER_ENGINE_MESSAGE_QUIT,
     BOOTSTRAPPER_ENGINE_MESSAGE_LAUNCHAPPROVEDEXE,
+    BOOTSTRAPPER_ENGINE_MESSAGE_COMPAREVERSIONS,
 };
 
 typedef struct _BAENGINE_APPLY_ARGS
@@ -147,6 +148,19 @@ typedef struct _BAENGINE_CLOSESPLASHSCREEN_RESULTS
     DWORD cbSize;
 } BAENGINE_CLOSESPLASHSCREEN_RESULTS;
 
+typedef struct _BAENGINE_COMPAREVERSIONS_ARGS
+{
+    DWORD cbSize;
+    LPCWSTR wzVersion1;
+    LPCWSTR wzVersion2;
+} BAENGINE_COMPAREVERSIONS_ARGS;
+
+typedef struct _BAENGINE_COMPAREVERSIONS_RESULTS
+{
+    DWORD cbSize;
+    int nResult;
+} BAENGINE_COMPAREVERSIONS_RESULTS;
+
 typedef struct _BAENGINE_DETECT_ARGS
 {
     DWORD cbSize;
diff --git a/src/WixToolset.BootstrapperCore.Native/inc/BundleExtension.h b/src/WixToolset.BootstrapperCore.Native/inc/BundleExtension.h
index 5c7d1260..be76a1a5 100644
--- a/src/WixToolset.BootstrapperCore.Native/inc/BundleExtension.h
+++ b/src/WixToolset.BootstrapperCore.Native/inc/BundleExtension.h
@@ -38,6 +38,7 @@ typedef struct _BUNDLE_EXTENSION_CREATE_ARGS
     LPVOID pvBundleExtensionEngineProcContext;
     LPCWSTR wzBootstrapperWorkingFolder;
     LPCWSTR wzBundleExtensionDataPath;
+    LPCWSTR wzExtensionId;
 } BUNDLE_EXTENSION_CREATE_ARGS;
 
 typedef struct _BUNDLE_EXTENSION_CREATE_RESULTS
diff --git a/src/WixToolset.BootstrapperCore.Native/inc/BundleExtensionEngine.h b/src/WixToolset.BootstrapperCore.Native/inc/BundleExtensionEngine.h
index adcae1af..becb5be3 100644
--- a/src/WixToolset.BootstrapperCore.Native/inc/BundleExtensionEngine.h
+++ b/src/WixToolset.BootstrapperCore.Native/inc/BundleExtensionEngine.h
@@ -27,8 +27,22 @@ enum BUNDLE_EXTENSION_ENGINE_MESSAGE
     BUNDLE_EXTENSION_ENGINE_MESSAGE_SETVARIABLENUMERIC,
     BUNDLE_EXTENSION_ENGINE_MESSAGE_SETVARIABLESTRING,
     BUNDLE_EXTENSION_ENGINE_MESSAGE_SETVARIABLEVERSION,
+    BUNDLE_EXTENSION_ENGINE_MESSAGE_COMPAREVERSIONS,
 };
 
+typedef struct _BUNDLE_EXTENSION_ENGINE_COMPAREVERSIONS_ARGS
+{
+    DWORD cbSize;
+    LPCWSTR wzVersion1;
+    LPCWSTR wzVersion2;
+} BUNDLE_EXTENSION_ENGINE_COMPAREVERSIONS_ARGS;
+
+typedef struct _BUNDLE_EXTENSION_ENGINE_COMPAREVERSIONS_RESULTS
+{
+    DWORD cbSize;
+    int nResult;
+} BUNDLE_EXTENSION_ENGINE_COMPAREVERSIONS_RESULTS;
+
 typedef struct _BUNDLE_EXTENSION_ENGINE_ESCAPESTRING_ARGS
 {
     DWORD cbSize;