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WIN_GetDrawableSize: avoid NULL pointer dereference

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Fixes https://github.com/libsdl-org/SDL/issues/6356
This commit is contained in:
Ozkan Sezer 2022-10-08 23:01:28 +03:00
parent a1d1946dcb
commit 4726270ead
1 changed files with 8 additions and 2 deletions
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10
src/video/windows/SDL_windowswindow.c
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@ -1408,10 +1408,16 @@ WIN_SetWindowOpacity(_THIS, SDL_Window * window, float opacity)
void void
WIN_GetDrawableSize(const SDL_Window *window, int *w, int *h) WIN_GetDrawableSize(const SDL_Window *window, int *w, int *h)
{ {
const SDL_WindowData *data = ((SDL_WindowData *)window->driverdata); HWND hwnd;
HWND hwnd = data->hwnd;
RECT rect; RECT rect;
if (!window || !(window->driverdata)) {
*w = 0;
*h = 0;
return;
}
hwnd = ((SDL_WindowData *)window->driverdata)->hwnd;
if (GetClientRect(hwnd, &rect)) { if (GetClientRect(hwnd, &rect)) {
*w = rect.right; *w = rect.right;
*h = rect.bottom; *h = rect.bottom;