Fix: Check for remaining events in the internal X11/xcb buffers (#86)

* Fix: Check for remaining events in the internal X11/xcb buffers before going to sleep.

* Also need to set the queue owner to xcb as wrl suggested.

Author: WeirdConstructor

src/x11/window.rs

@@ -283,6 +283,10 @@ impl Window {
 
             let mut fds = [PollFd::new(xcb_fd, PollFlags::POLLIN)];
 
+            // Check for any events in the internal buffers
+            // before going to sleep:
+            self.drain_xcb_events(handler);
+
             // FIXME: handle errors
             poll(&mut fds, until_next_frame.subsec_millis() as i32).unwrap();
 

src/x11/xcb_connection.rs

@@ -46,6 +46,8 @@ impl XcbConnection {
     pub fn new() -> Result<Self, xcb::base::ConnError> {
         let (conn, xlib_display) = xcb::Connection::connect_with_xlib_display()?;
 
+        conn.set_event_queue_owner(xcb::base::EventQueueOwner::Xcb);
+
         let (wm_protocols, wm_delete_window, wm_normal_hints) = intern_atoms!(&conn, WM_PROTOCOLS, WM_DELETE_WINDOW, WM_NORMAL_HINTS);
 
         Ok(Self {