1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
#include "precomp.h"
struct LOAD_THREAD_CONTEXT
{
HWND hWnd;
LPCWSTR wzThemePath;
LPCWSTR wzWxlPath;
HANDLE hInit;
};
static DWORD WINAPI LoadThreadProc(
__in LPVOID pvContext
);
extern "C" HRESULT LoadStart(
__in_z LPCWSTR wzThemePath,
__in_z_opt LPCWSTR wzWxlPath,
__in HWND hWnd,
__out HANDLE* phThread
)
{
HRESULT hr = S_OK;
HANDLE rgHandles[2] = { };
LOAD_THREAD_CONTEXT context = { };
rgHandles[0] = ::CreateEventW(NULL, TRUE, FALSE, NULL);
ExitOnNullWithLastError(rgHandles[0], hr, "Failed to create load init event.");
context.hWnd = hWnd;
context.wzThemePath = wzThemePath;
context.wzWxlPath = wzWxlPath;
context.hInit = rgHandles[0];
rgHandles[1] = ::CreateThread(NULL, 0, LoadThreadProc, &context, 0, NULL);
ExitOnNullWithLastError(rgHandles[1], hr, "Failed to create load thread.");
::WaitForMultipleObjects(countof(rgHandles), rgHandles, FALSE, INFINITE);
*phThread = rgHandles[1];
rgHandles[1] = NULL;
LExit:
ReleaseHandle(rgHandles[1]);
ReleaseHandle(rgHandles[0]);
return hr;
}
static DWORD WINAPI LoadThreadProc(
__in LPVOID pvContext
)
{
HRESULT hr = S_OK;
WIX_LOCALIZATION* pWixLoc = NULL;
LPWSTR sczThemePath = NULL;
LPWSTR sczWxlPath = NULL;
BOOL fComInitialized = FALSE;
HANDLE hDirectory = INVALID_HANDLE_VALUE;
LPWSTR sczDirectory = NULL;
LPWSTR wzFileName = NULL;
THEME* pTheme = NULL;
HANDLE_THEME* pHandle = NULL;
LOAD_THREAD_CONTEXT* pContext = static_cast<LOAD_THREAD_CONTEXT*>(pvContext);
HWND hWnd = pContext->hWnd;
hr = PathGetFullPathName(pContext->wzThemePath, &sczThemePath, NULL, NULL);
ExitOnFailure(hr, "Failed to get full path to initial theme file.");
if (pContext->wzWxlPath)
{
hr = StrAllocString(&sczWxlPath, pContext->wzWxlPath, 0);
ExitOnFailure(hr, "Failed to copy .wxl path to initial file.");
}
// We can signal the initialization event as soon as we have copied the context
// values into local variables.
::SetEvent(pContext->hInit);
hr = ::CoInitialize(NULL);
ExitOnFailure(hr, "Failed to initialize COM on load thread.");
fComInitialized = TRUE;
// Open a handle to the directory so we can put a notification on it.
hr = PathGetDirectory(sczThemePath, &sczDirectory);
ExitOnFailure(hr, "Failed to get path directory.");
wzFileName = PathFile(sczThemePath);
hDirectory = ::CreateFileW(sczDirectory, FILE_LIST_DIRECTORY, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (INVALID_HANDLE_VALUE == hDirectory)
{
ExitWithLastError(hr, "Failed to open directory: %ls", sczDirectory);
}
BOOL fUpdated = FALSE;
do
{
// Get the last modified time on the file we're loading for verification that the
// file actually gets changed down below.
FILETIME ftModified = { };
FileGetTime(sczThemePath, NULL, NULL, &ftModified);
::SendMessageW(hWnd, WM_THMVWR_THEME_LOAD_BEGIN, 0, 0);
// Try to load the theme file.
hr = ThemeLoadFromFile(sczThemePath, &pTheme);
if (FAILED(hr))
{
::SendMessageW(hWnd, WM_THMVWR_THEME_LOAD_ERROR, 0, hr);
}
else
{
if (sczWxlPath)
{
hr = LocLoadFromFile(sczWxlPath, &pWixLoc);
ExitOnFailure(hr, "Failed to load loc file from path: %ls", sczWxlPath);
hr = ThemeLocalize(pTheme, pWixLoc);
ExitOnFailure(hr, "Failed to localize theme: %ls", sczWxlPath);
}
hr = AllocHandleTheme(pTheme, &pHandle);
ExitOnFailure(hr, "Failed to allocate handle to theme");
::SendMessageW(hWnd, WM_THMVWR_NEW_THEME, 0, reinterpret_cast<LPARAM>(pHandle));
pHandle = NULL;
}
fUpdated = FALSE;
do
{
DWORD rgbNotifications[1024];
DWORD cbRead = 0;
if (!::ReadDirectoryChangesW(hDirectory, rgbNotifications, sizeof(rgbNotifications), FALSE, FILE_NOTIFY_CHANGE_LAST_WRITE, &cbRead, NULL, NULL))
{
ExitWithLastError(hr, "Failed while watching directory: %ls", sczDirectory);
}
// Wait for half a second to let all the file handles get closed to minimize access
// denied errors.
::Sleep(500);
FILE_NOTIFY_INFORMATION* pNotification = reinterpret_cast<FILE_NOTIFY_INFORMATION*>(rgbNotifications);
while (pNotification)
{
// If our file was updated, check to see if the modified time really changed. The notifications
// are often trigger happy thinking the file changed two or three times in a row. Maybe it's AV
// software creating the problems but actually checking the modified date works well.
if (CSTR_EQUAL == ::CompareStringW(LOCALE_NEUTRAL, NORM_IGNORECASE, pNotification->FileName, pNotification->FileNameLength / sizeof(WCHAR), wzFileName, -1))
{
FILETIME ft = { };
FileGetTime(sczThemePath, NULL, NULL, &ft);
fUpdated = (ftModified.dwHighDateTime < ft.dwHighDateTime) || (ftModified.dwHighDateTime == ft.dwHighDateTime && ftModified.dwLowDateTime < ft.dwLowDateTime);
break;
}
pNotification = pNotification->NextEntryOffset ? reinterpret_cast<FILE_NOTIFY_INFORMATION*>(reinterpret_cast<BYTE*>(pNotification) + pNotification->NextEntryOffset) : NULL;
}
} while (!fUpdated);
} while(fUpdated);
LExit:
if (fComInitialized)
{
::CoUninitialize();
}
LocFree(pWixLoc);
ReleaseFileHandle(hDirectory);
ReleaseStr(sczDirectory);
ReleaseStr(sczThemePath);
ReleaseStr(sczWxlPath);
return hr;
}
extern "C" HRESULT AllocHandleTheme(
__in THEME* pTheme,
__out HANDLE_THEME** ppHandle
)
{
HRESULT hr = S_OK;
HANDLE_THEME* pHandle = NULL;
pHandle = static_cast<HANDLE_THEME*>(MemAlloc(sizeof(HANDLE_THEME), TRUE));
ExitOnNull(pHandle, hr, E_OUTOFMEMORY, "Failed to allocate theme handle.");
pHandle->cReferences = 1;
pHandle->pTheme = pTheme;
*ppHandle = pHandle;
pHandle = NULL;
LExit:
ReleaseMem(pHandle);
return hr;
}
extern "C" void IncrementHandleTheme(
__in HANDLE_THEME* pHandle
)
{
::InterlockedIncrement(reinterpret_cast<LONG*>(&pHandle->cReferences));
}
extern "C" void DecrementHandleTheme(
__in HANDLE_THEME* pHandle
)
{
if (pHandle && 0 == ::InterlockedDecrement(reinterpret_cast<LONG*>(&pHandle->cReferences)))
{
ThemeFree(pHandle->pTheme);
MemFree(pHandle);
}
}
|
