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# MIDIObjectAddRemoveNotification

A message that describes the addition or removal of an object.

```
struct MIDIObjectAddRemoveNotification
```

## Topics

### Inspecting the Notification

[`messageID`](/documentation/CoreMIDI/MIDIObjectAddRemoveNotification/messageID)

The message type.

[`messageSize`](/documentation/CoreMIDI/MIDIObjectAddRemoveNotification/messageSize)

The message size.

[`parent`](/documentation/CoreMIDI/MIDIObjectAddRemoveNotification/parent)

The parent object of the added or removed child.

[`parentType`](/documentation/CoreMIDI/MIDIObjectAddRemoveNotification/parentType)

The parent object type.

[`child`](/documentation/CoreMIDI/MIDIObjectAddRemoveNotification/child)

The added or removed child object.

[`childType`](/documentation/CoreMIDI/MIDIObjectAddRemoveNotification/childType)

The child object type.

### Initializers

[`init()`](/documentation/CoreMIDI/MIDIObjectAddRemoveNotification/init())

[`init(messageID:messageSize:parent:parentType:child:childType:)`](/documentation/CoreMIDI/MIDIObjectAddRemoveNotification/init(messageID:messageSize:parent:parentType:child:childType:))


---

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