MusicEventIteratorHasPreviousEvent(_:_:)
Indicates whether or not a music track contains an event before the music event iterator’s current position.
Declaration
func MusicEventIteratorHasPreviousEvent(_ inIterator: MusicEventIterator, _ outHasPrevEvent: UnsafeMutablePointer<DarwinBoolean>) -> OSStatusParameters
- inIterator:
The music event iterator whose state you want to know about.
- outHasPrevEvent:
On output,
true(nonzero) if there is an event closer to the start of the music track than the music event iterator’s current position;false(zero) otherwise.
Return Value
A result code.
See Also
Iterating Over Music Events
NewMusicEventIterator(_:_:)DisposeMusicEventIterator(_:)MusicEventIteratorNextEvent(_:)MusicEventIteratorSeek(_:_:)MusicEventIteratorDeleteEvent(_:)MusicEventIteratorGetEventInfo(_:_:_:_:_:)MusicEventIteratorHasCurrentEvent(_:_:)MusicEventIteratorHasNextEvent(_:_:)MusicEventIteratorPreviousEvent(_:)MusicEventIteratorSetEventInfo(_:_:_:)MusicEventIteratorSetEventTime(_:_:)MusicEventIteratorMusicEventTypeExtendedNoteOnEventExtendedTempoEvent