rem: gdk_screen_get_monitor_geometry (gdk_screen_get_default (),
add: GdkScreen *screen;  screen = gtk_window_get_screen (GTK_WINDOW (totem->win)); gdk_screen_get_monitor_geometry (screen,
context: update_fullscreen_size (Totem *totem){	gdk_screen_get_monitor_geometry (gdk_screen_get_default (),			gdk_screen_get_monitor_at_window			(gdk_screen_get_default (),			 totem->win->window),			&totem->fullscreen_rect);}