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Fixed crash if all displays have been disconnected

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Fixes https://github.com/libsdl-org/SDL/issues/5867
This commit is contained in:
Sam Lantinga 2022-08-01 14:23:50 -07:00
parent 12aa4d5653
commit cb107bef58
1 changed files with 16 additions and 16 deletions
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32
src/video/windows/SDL_windowsevents.c
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@ -623,24 +623,24 @@ WIN_KeyboardHookProc(int nCode, WPARAM wParam, LPARAM lParam)
static void WIN_CheckICMProfileChanged(SDL_Window* window)
{
SDL_VideoDisplay* display = SDL_GetDisplayForWindow(window);
SDL_DisplayData* data = (SDL_DisplayData*)display->driverdata;
static WCHAR currentIcmFileName[MAX_PATH] = { '\0' };
WCHAR icmFileName[MAX_PATH];
HDC hdc;
SDL_bool succeeded;
DWORD fileNameSize = MAX_PATH;
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
SDL_DisplayData *data = display ? (SDL_DisplayData*)display->driverdata : NULL;
hdc = CreateDCW(data->DeviceName, NULL, NULL, NULL);
if (hdc) {
succeeded = GetICMProfileW(hdc, &fileNameSize, icmFileName);
DeleteDC(hdc);
if (succeeded) {
if (SDL_wcsncmp(currentIcmFileName, icmFileName, fileNameSize)) {
SDL_wcslcpy(currentIcmFileName, icmFileName, fileNameSize);
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_ICCPROF_CHANGED, 0, 0);
if (data) {
HDC hdc = CreateDCW(data->DeviceName, NULL, NULL, NULL);
if (hdc) {
static WCHAR currentIcmFileName[MAX_PATH];
WCHAR icmFileName[MAX_PATH];
DWORD fileNameSize = SDL_arraysize(icmFileName);
if (GetICMProfileW(hdc, &fileNameSize, icmFileName)) {
/* fileNameSize includes '\0' on return */
fileNameSize *= sizeof(icmFileName[0]);
if (SDL_memcmp(currentIcmFileName, icmFileName, fileNameSize) != 0) {
SDL_memcpy(currentIcmFileName, icmFileName, fileNameSize);
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_ICCPROF_CHANGED, 0, 0);
}
}
DeleteDC(hdc);
}
}
}