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Handle recursion in SDL_UpdateMouseCapture() 

Fixes https://github.com/libsdl-org/SDL/pull/5608
This commit is contained in:
Sam Lantinga 2022-05-18 17:15:10 -07:00
parent dbd54dd708
commit 7044452dd6
1 changed files with 19 additions and 8 deletions
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27
src/events/SDL_mouse.c
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@ -1028,21 +1028,32 @@ SDL_UpdateMouseCapture(SDL_bool force_release)
}
if (capture_window != mouse->capture_window) {
if (mouse->capture_window) {
mouse->CaptureMouse(NULL);
mouse->capture_window->flags &= ~SDL_WINDOW_MOUSE_CAPTURE;
mouse->capture_window = NULL;
/* We can get here recursively on Windows, so make sure we complete
* all of the window state operations before we change the capture state
* (e.g. https://github.com/libsdl-org/SDL/pull/5608)
*/
SDL_Window *previous_capture = mouse->capture_window;
if (previous_capture) {
previous_capture->flags &= ~SDL_WINDOW_MOUSE_CAPTURE;
}
if (capture_window) {
if (mouse->CaptureMouse(capture_window) < 0) {
/* CaptureMouse() will have set an error */
return -1;
}
capture_window->flags |= SDL_WINDOW_MOUSE_CAPTURE;
}
mouse->capture_window = capture_window;
if (mouse->CaptureMouse(capture_window) < 0) {
/* CaptureMouse() will have set an error, just restore the state */
if (previous_capture) {
previous_capture->flags |= SDL_WINDOW_MOUSE_CAPTURE;
}
if (capture_window) {
capture_window->flags &= ~SDL_WINDOW_MOUSE_CAPTURE;
}
return -1;
}
}
return 0;
}