69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/* 17 july 2014 */
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#include "winapi_windows.h"
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static ULONG_PTR comctlManifestCookie;
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static HMODULE comctl32;
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/* these are listed as WINAPI in both Microsoft's and MinGW's headers, but not on MSDN for some reason */
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BOOL (*WINAPI fv_SetWindowSubclass)(HWND, SUBCLASSPROC, UINT_PTR, DWORD_PTR);
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BOOL (*WINAPI fv_RemoveWindowSubclass)(HWND, SUBCLASSPROC, UINT_PTR);
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LRESULT (*WINAPI fv_DefSubclassProc)(HWND, UINT, WPARAM, LPARAM);
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DWORD initCommonControls(LPCWSTR manifest, char **errmsg)
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{
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ACTCTX actctx;
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HANDLE ac;
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INITCOMMONCONTROLSEX icc;
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FARPROC f;
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/* this is listed as WINAPI in both Microsoft's and MinGW's headers, but not on MSDN for some reason */
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BOOL (*WINAPI ficc)(const LPINITCOMMONCONTROLSEX);
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ZeroMemory(&actctx, sizeof (ACTCTX));
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actctx.cbSize = sizeof (ACTCTX);
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actctx.dwFlags = ACTCTX_FLAG_SET_PROCESS_DEFAULT;
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actctx.lpSource = manifest;
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ac = CreateActCtx(&actctx);
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if (ac == INVALID_HANDLE_VALUE) {
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*errmsg = "error creating activation context for synthesized manifest file";
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return GetLastError();
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}
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if (ActivateActCtx(ac, &comctlManifestCookie) == FALSE) {
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*errmsg = "error activating activation context for synthesized manifest file";
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return GetLastError();
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}
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ZeroMemory(&icc, sizeof (INITCOMMONCONTROLSEX));
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icc.dwSize = sizeof (INITCOMMONCONTROLSEX);
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icc.dwICC = ICC_PROGRESS_CLASS | ICC_TAB_CLASSES;
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comctl32 = LoadLibraryW(L"comctl32.dll");
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if (comctl32 == NULL) {
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*errmsg = "error loading comctl32.dll";
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return GetLastError();
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}
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/* GetProcAddress() only takes a multibyte string */
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#define LOAD(fn) f = GetProcAddress(comctl32, fn); \
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if (f == NULL) { \
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*errmsg = "error loading " fn "()"; \
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return GetLastError(); \
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}
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LOAD("InitCommonControlsEx");
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ficc = (BOOL (*WINAPI)(const LPINITCOMMONCONTROLSEX)) f;
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LOAD("SetWindowSubclass");
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fv_SetWindowSubclass = (BOOL (*WINAPI)(HWND, SUBCLASSPROC, UINT_PTR, DWORD_PTR)) f;
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LOAD("RemoveWindowSubclass");
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fv_RemoveWindowSubclass = (BOOL (*WINAPI)(HWND, SUBCLASSPROC, UINT_PTR)) f;
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LOAD("DefSubclassProc");
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fv_DefSubclassProc = (LRESULT (*WINAPI)(HWND, UINT, WPARAM, LPARAM)) f;
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if ((*ficc)(&icc) == FALSE) {
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*errmsg = "error initializing Common Controls (comctl32.dll)";
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return GetLastError();
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}
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return 0;
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}
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