int snd_seq_control_queue
(snd_seq_t *handle, int q, int type, int value, snd_seq_event_t *ev);
Sends a queue control event to the specified queue q. The event type and control value are given by arguments. If ev is NULL, the event is sent immediately using a temporal internal event record. Otherwise the given event record is used.
Function returns zero if successful, or a negative error code.