调整窗口堆叠顺序

src/xcb/xcb.c

@@ -331,3 +331,12 @@ bool get_pointer_position(int32_t *x, int32_t *y) {
 
   return false;
 }
+
+bool xcb_check_mask_event(xcb_event_mask_t event_mask) {
+  xcb_generic_event_t *event = xcb_poll_for_event(conn);
+  if (!event) return false;
+
+  bool result = XCB_EVENT_RESPONSE_TYPE(event) == event_mask;
+  free(event);
+  return result;
+}