This message is a mechanism for the physical device driver to report its own event (cue point) detection. The stream handler will call the PDD with an event via DDCMD_CONTROL (DDCMD_ENABLE_EVENT) and the PDD will monitor the stream time for this event (if the PDD supports event detection). When the event is detected, the PDD will call back the stream handler and report this event via this message. The handle to the event and stream time must be set.