OBT_PROP_MSG_TO(t->client->window, t->client->window, WM_PROTOCOLS,
OBT_PROP_ATOM(NET_WM_PING), t->id, t->client->window, 0, 0,
NoEventMask);
OBT_PROP_MSG_TO(t->client->window, t->client->window, WM_PROTOCOLS,
OBT_PROP_ATOM(NET_WM_PING), t->id, t->client->window, 0, 0,
NoEventMask);