# MIDIObjectGetProperties(_:_:_:) Returns all properties of an object. ``` func MIDIObjectGetProperties(_ obj: MIDIObjectRef, _ outProperties: UnsafeMutablePointer?>, _ deep: Bool) -> OSStatus ``` ## Parameters `obj` The object to query. `outProperties` On successful return, the object’s properties. `deep` Specify `true` to include the object’s children; for example, a device’s entities, or an entity’s endpoints. ## Return Value An `OSStatus` result code. ## Discussion The property list may be a dictionary or an array. Dictionaries map property names () to values, which may be , , or . Arrays provide collections of other property list types. Properties that an object inherits from its owning object aren’t included. --- 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)