IOUserMIDISource Declarationclass IOUserMIDISource; TopicsInstance MethodsGetBaseClassIDGetClassIDSendfreeinitType MethodsCreate RelationshipsInherits FromIOUserMIDIEndpoint See AlsoClassesIOUserMIDIDestinationIOUserMIDIDeviceIOUserMIDIDriverIOUserMIDIEndpointIOUserMIDIEntityIOUserMIDIObject