---
title: willSwitchToNSLayoutManagerNotification
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nstextview/willswitchtonslayoutmanagernotification
---

# willSwitchToNSLayoutManagerNotification

Posted by the framework before switching to the compatibility mode layout manager.

## Declaration

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

## See Also

### Notifications

- [didChangeSelectionNotification](appkit/nstextview/didchangeselectionnotification.md)
- [willChangeNotifyingTextViewNotification](appkit/nstextview/willchangenotifyingtextviewnotification.md)
- [didChangeTypingAttributesNotification](appkit/nstextview/didchangetypingattributesnotification.md)
- [didSwitchToNSLayoutManagerNotification](appkit/nstextview/didswitchtonslayoutmanagernotification.md)