---
title: preferredScrollerStyleDidChangeNotification
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsscroller/preferredscrollerstyledidchangenotification
---

# preferredScrollerStyleDidChangeNotification

Posted if the preferred scroller style changes.

## Declaration

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

## Discussion

Discussion For a full discussion, see preferredScrollerStyle. To observe this notification using Swift concurrency, use NSScroller.PreferredScrollerStyleDidChangeMessage.