# IOUserMIDIEntity ``` class IOUserMIDIEntity; ``` ## Topics ### Instance Methods [`kern_return_t AddDestination(IOUserMIDIDestination *destination);`](/documentation/MIDIDriverKit/IOUserMIDIEntity/AddDestination) [`kern_return_t AddSource(IOUserMIDISource *source);`](/documentation/MIDIDriverKit/IOUserMIDIEntity/AddSource) [`virtual IOUserMIDIClassID GetBaseClassID() const;`](/documentation/MIDIDriverKit/IOUserMIDIEntity/GetBaseClassID) [`virtual IOUserMIDIClassID GetClassID() const;`](/documentation/MIDIDriverKit/IOUserMIDIEntity/GetClassID) [`OSSharedPtr GetDestination(uint32_t index) const;`](/documentation/MIDIDriverKit/IOUserMIDIEntity/GetDestination) [`OSSharedPtr GetDestinations() const;`](/documentation/MIDIDriverKit/IOUserMIDIEntity/GetDestinations) [`OSSharedPtr GetSource(uint32_t index) const;`](/documentation/MIDIDriverKit/IOUserMIDIEntity/GetSource) [`OSSharedPtr GetSources() const;`](/documentation/MIDIDriverKit/IOUserMIDIEntity/GetSources) [`kern_return_t RemoveDestination(IOUserMIDIDestination *destination);`](/documentation/MIDIDriverKit/IOUserMIDIEntity/RemoveDestination) [`kern_return_t RemoveSource(IOUserMIDISource *source);`](/documentation/MIDIDriverKit/IOUserMIDIEntity/RemoveSource) [`virtual kern_return_t SetProperties(OSDictionary *propertyDictionary);`](/documentation/MIDIDriverKit/IOUserMIDIEntity/SetProperties) [`virtual void free();`](/documentation/MIDIDriverKit/IOUserMIDIEntity/free) [`virtual bool init(IOUserMIDIDriver *driver, IOUserMIDIDevice *device, OSString *name, IOUserMIDIProtocolID protocol, uint32_t numSources, uint32_t numDestinations);`](/documentation/MIDIDriverKit/IOUserMIDIEntity/init) ### Type Methods [`static OSSharedPtr Create(IOUserMIDIDriver *driver, IOUserMIDIDevice *device, OSString *name, IOUserMIDIProtocolID protocol, uint32_t numSources, uint32_t numDestinations);`](/documentation/MIDIDriverKit/IOUserMIDIEntity/Create) ## Relationships ### Inherits From [`IOUserMIDIObject`](/documentation/MIDIDriverKit/IOUserMIDIObject) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)