# IOUserMIDIObject ``` class IOUserMIDIObject; ``` ## Topics ### Instance Methods [`kern_return_t CopyProperty(IOUserMIDIProperty propertyID, OSObject **outObject) const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/CopyProperty-1stjj) [`kern_return_t CopyProperty(OSString *key, OSObject **outObject) const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/CopyProperty-27g8l) [`virtual IOUserMIDIClassID GetBaseClassID() const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/GetBaseClassID) [`virtual IOUserMIDIClassID GetClassID() const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/GetClassID) [`OSSharedPtr GetName() const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/GetName) [`IOUserMIDIObjectID GetObjectID() const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/GetObjectID) [`IOUserMIDIObjectID GetOwnerObjectID() const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/GetOwnerObjectID) [`OSSharedPtr GetProperties() const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/GetProperties) [`kern_return_t GetPropertyType(IOUserMIDIProperty propertyID, IOUserMIDIPropertyType *type) const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/GetPropertyType) [`OSSharedPtr GetWorkQueue() const;`](/documentation/MIDIDriverKit/IOUserMIDIObject/GetWorkQueue) [`kern_return_t SetName(OSString *name);`](/documentation/MIDIDriverKit/IOUserMIDIObject/SetName) [`virtual kern_return_t SetProperties(OSDictionary *propertyDictionary);`](/documentation/MIDIDriverKit/IOUserMIDIObject/SetProperties) [`kern_return_t SetProperty(IOUserMIDIProperty propertyID, OSObject *object);`](/documentation/MIDIDriverKit/IOUserMIDIObject/SetProperty-24d9k) [`kern_return_t SetProperty(OSString *key, OSObject *object);`](/documentation/MIDIDriverKit/IOUserMIDIObject/SetProperty-9rf3g) [`virtual void free();`](/documentation/MIDIDriverKit/IOUserMIDIObject/free) [`virtual bool init();`](/documentation/MIDIDriverKit/IOUserMIDIObject/init-8nadj) [`virtual bool init(IOUserMIDIDriver *driver);`](/documentation/MIDIDriverKit/IOUserMIDIObject/init-20qdd) ## Relationships ### Inherits From [`OSObject`](/documentation/DriverKit/OSObject) ### Inherited By [`IOUserMIDIEntity`](/documentation/MIDIDriverKit/IOUserMIDIEntity) [`IOUserMIDIDevice`](/documentation/MIDIDriverKit/IOUserMIDIDevice) [`IOUserMIDIEndpoint`](/documentation/MIDIDriverKit/IOUserMIDIEndpoint) --- 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)