IOUserMIDIDriver Declarationclass IOUserMIDIDriver; TopicsInstance MethodsAddObjectGetMIDIObjectForObjectIDGetNameGetWorkQueueNewUserClientRemoveObjectSetNameStartStartIOStopStopIOfreeinit RelationshipsInherits FromIOService See AlsoClassesIOUserMIDIDestinationIOUserMIDIDeviceIOUserMIDIEndpointIOUserMIDIEntityIOUserMIDIObjectIOUserMIDISource