win->Release();
gint handle_motion_notify_event(GtkWidget *w, GdkEventMotion * event, gpointer p){  nsMouseEvent mevent;  InitMotionEvent(event, p, mevent, NS_MOUSE_MOVE);  nsWindow *win = (nsWindow *)p;  win->DispatchMouseEvent(mevent);  UninitMotionEvent(event, p, mevent, NS_MOUSE_MOVE);  return PR_TRUE;}