SDL doesn't grab Alt+F4 under Windows by default. Pressing Alt+F4 thus closes
the VM immediately without confirmation, possibly leading to data loss. Fix
this by always grabbing Alt+F4 on Windows hosts, too.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
---
 ui/sdl2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ui/sdl2.c b/ui/sdl2.c
index 91705e4bce..0031f9bca2 100644
--- a/ui/sdl2.c
+++ b/ui/sdl2.c
@@ -857,6 +857,7 @@ static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 #endif
     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
     SDL_SetHint(SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED, "0");
+    SDL_SetHint(SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4, "1");
     memset(&info, 0, sizeof(info));
     SDL_VERSION(&info.version);
 
-- 
2.40.0