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Fixed bug 4043 - SDL_windowswindow.c incorrect icon height

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Needed to allocate space for the mask in the ICONIMAGE structure
This commit is contained in:
Sam Lantinga 2018-01-15 10:29:53 -08:00
parent a0c4eb2aa3
commit 0cba684794
1 changed files with 7 additions and 3 deletions
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10
src/video/windows/SDL_windowswindow.c
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@ -438,11 +438,12 @@ WIN_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
HICON hicon = NULL;
BYTE *icon_bmp;
int icon_len, y;
int icon_len, mask_len, y;
SDL_RWops *dst;
/* Create temporary bitmap buffer */
icon_len = 40 + icon->h * icon->w * sizeof(Uint32);
/* Create temporary buffer for ICONIMAGE structure */
mask_len = (icon->h * (icon->w + 7)/8);
icon_len = 40 + icon->h * icon->w * sizeof(Uint32) + mask_len;
icon_bmp = SDL_stack_alloc(BYTE, icon_len);
dst = SDL_RWFromMem(icon_bmp, icon_len);
if (!dst) {
@ -471,6 +472,9 @@ WIN_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
SDL_RWwrite(dst, src, icon->w * sizeof(Uint32), 1);
}
/* Write the mask */
SDL_memset(icon_bmp + icon_len - mask_len, 0xFF, mask_len);
hicon = CreateIconFromResource(icon_bmp, icon_len, TRUE, 0x00030000);
SDL_RWclose(dst);