---
title: registryDidChangeNotification
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsimagerep/registrydidchangenotification
---

# registryDidChangeNotification

Posted whenever the image representation class registry changes.

## Declaration

```swift
class let registryDidChangeNotification: NSNotification.Name
```

## Discussion

Discussion The notification object is the image class that is registered or unregistered. This notification does not contain a userInfo dictionary. To observe this notification using Swift concurrency, use NSImageRep.RegistryDidChangeMessage.