sn_display = sn_display_new(ob_display, NULL, NULL);
sn_context = sn_monitor_context_new(sn_display, ob_screen,
sn_event_func, NULL, NULL);
sn_display = sn_display_new(ob_display, NULL, NULL);
sn_context = sn_monitor_context_new(sn_display, ob_screen,
sn_event_func, NULL, NULL);