rem: g_message ("update_vis_xid");
context: update_vis_xid (GstPlay * play, gint xid, BaconVideoWidget * bvw){  g_return_if_fail (bvw != NULL);  g_return_if_fail (BACON_IS_VIDEO_WIDGET (bvw));  g_message ("update_vis_xid");  if ((bvw->priv->vw) && (!bvw->priv->media_has_video))    {      gst_video_widget_set_xembed_xid (bvw->priv->vw, xid);      shrink_toplevel (bvw);    }}