DirectX SDK |
The DirectMusicPerformance.GetGrooveLevel method retrieves the groove level from the performance's control segment. The groove level determines which patterns can be played at the specified time.
object.GetGrooveLevel(mtTime As Long, _ mtUntil As Long) As Byte
If the method succeeds, it returns a value in the range from 1 through 100.
If the method fails, it raises an error, and Err.Number can be set to one of the following error codes:
DMUS_E_NO_MASTER_CLOCK |
DMUS_E_GET_UNSUPPORTED |
DMUS_E_NOT_FOUND |
DMUS_E_TRACK_NOT_FOUND |
Normally, the primary segment is the control segment. However, a secondary segment can be designated as a control segment when it is played. The object returned by the method can become invalid before the time returned in mtUntil if another control segment is cued.