diff options
Diffstat (limited to 'redo/comctl32_windows.c')
| -rw-r--r-- | redo/comctl32_windows.c | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/redo/comctl32_windows.c b/redo/comctl32_windows.c index 09b9605..df1bdcd 100644 --- a/redo/comctl32_windows.c +++ b/redo/comctl32_windows.c @@ -16,8 +16,24 @@ LRESULT (*WINAPI fv_DefSubclassProc)(HWND, UINT, WPARAM, LPARAM); ICC_LISTVIEW_CLASSES | /* list views */ \ 0) -DWORD initCommonControls(LPWSTR manifest, char **errmsg) +/* note that this is an 8-bit character string we're writing; see the encoding clause */ +static const char manifest[] = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<assembly xmlns=\"urn:schemas-microsoft-com:asm.v1\" manifestVersion=\"1.0\">\n<assemblyIdentity\n version=\"1.0.0.0\"\n processorArchitecture=\"*\"\n name=\"CompanyName.ProductName.YourApplication\"\n type=\"win32\"\n/>\n<description>Your application description here.</description>\n<dependency>\n <dependentAssembly>\n <assemblyIdentity\n type=\"win32\"\n name=\"Microsoft.Windows.Common-Controls\"\n version=\"6.0.0.0\"\n processorArchitecture=\"*\"\n publicKeyToken=\"6595b64144ccf1df\"\n language=\"*\"\n />\n </dependentAssembly>\n</dependency>\n</assembly>\n"; + +/* +Windows requires a manifest file to enable Common Controls version 6. +The only way to not require an external manifest is to synthesize the manifest ourselves. +We can use the activation context API to load it at runtime. +References: +- http://stackoverflow.com/questions/4308503/how-to-enable-visual-styles-without-a-manifest +- http://support.microsoft.com/kb/830033 +Because neither Go nor MinGW have ways to compile in resources like this (as far as I know), we have to do the work ourselves. +*/ +DWORD initCommonControls(char **errmsg) { + WCHAR temppath[MAX_PATH + 1]; + WCHAR filename[MAX_PATH + 1]; + HANDLE file; + DWORD nExpected, nGot; ACTCTX actctx; HANDLE ac; INITCOMMONCONTROLSEX icc; @@ -25,10 +41,45 @@ DWORD initCommonControls(LPWSTR manifest, char **errmsg) /* this is listed as WINAPI in both Microsoft's and MinGW's headers, but not on MSDN for some reason */ BOOL (*WINAPI ficc)(const LPINITCOMMONCONTROLSEX); + if (GetTempPathW(MAX_PATH + 1, temppath) == 0) { + *errmsg = "error getting temporary path for writing manifest file"; + return GetLastError(); + } + if (GetTempFileNameW(temppath, L"manifest", 0, filename) == 0) { + *errmsg = "error getting temporary filename for writing manifest file"; + return GetLastError(); + } + file = CreateFileW(filename, GENERIC_WRITE, + 0, /* don't share while writing */ + NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); + if (file == NULL) { + *errmsg = "error creating manifest file"; + return GetLastError(); + } + nExpected = strlen(manifest); /* TODO make static */ + SetLastError(0); /* catch errorless short writes */ + if (WriteFile(file, manifest, nExpected, &nGot, NULL) == 0) { + *errmsg = "error writing manifest file"; + return GetLastError(); + } + if (nGot != nExpected) { + DWORD lasterr; + + lasterr = GetLastError(); + *errmsg = "short write to manifest file"; + if (lasterr == 0) + *errmsg = "short write to manifest file without error code"; + return lasterr; + } + if (CloseHandle(file) == 0) { + *errmsg = "error closing manifest file (this IS an error here because not doing so will prevent Windows from being able to use the manifest file in an activation context)"; + return GetLastError(); + } + ZeroMemory(&actctx, sizeof (ACTCTX)); actctx.cbSize = sizeof (ACTCTX); actctx.dwFlags = ACTCTX_FLAG_SET_PROCESS_DEFAULT; - actctx.lpSource = manifest; + actctx.lpSource = filename; ac = CreateActCtx(&actctx); if (ac == INVALID_HANDLE_VALUE) { *errmsg = "error creating activation context for synthesized manifest file"; |