---
title: NSFontCollection.DidChangeMessage
framework: appkit
role: symbol
role_heading: Structure
path: appkit/nsfontcollection/didchangemessage
---

# NSFontCollection.DidChangeMessage

## Declaration

```swift
struct DidChangeMessage
```

## Topics

### Initializers

- [init(fontCollection:action:collectionName:oldName:visibility:)](appkit/nsfontcollection/didchangemessage/init(fontcollection:action:collectionname:oldname:visibility:).md)

### Instance Properties

- [action](appkit/nsfontcollection/didchangemessage/action.md)
- [collectionName](appkit/nsfontcollection/didchangemessage/collectionname.md)
- [fontCollection](appkit/nsfontcollection/didchangemessage/fontcollection.md)
- [oldName](appkit/nsfontcollection/didchangemessage/oldname.md)
- [visibility](appkit/nsfontcollection/didchangemessage/visibility.md)

## Relationships

### Conforms To

- [NotificationCenter.MainActorMessage](foundation/notificationcenter/mainactormessage.md)
- [SendableMetatype](swift/sendablemetatype.md)