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  "title" : "browserColumnConfigurationDidChange(_:)"
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# browserColumnConfigurationDidChange(_:)

Used by clients to implement their own column width persistence.

```
@MainActor optional func browserColumnConfigurationDidChange(_ notification: Notification)
```

## Parameters

`notification`

A notification named [`columnConfigurationDidChangeNotification`](/documentation/AppKit/NSBrowser/columnConfigurationDidChangeNotification).

## Discussion

This method applies only to browsers with resize type [`NSBrowser.ColumnResizingType.userColumnResizing`](/documentation/AppKit/NSBrowser/ColumnResizingType-swift.enum/userColumnResizing). It is invoked when the [`setWidth(_:ofColumn:)`](/documentation/AppKit/NSBrowser/setWidth(_:ofColumn:)) method of [`NSBrowser`](/documentation/AppKit/NSBrowser) is used to change the width of any browser columns or when the user resizes any columns. If the user resizes more than one column, a single notification is posted when the user is finished resizing.

## See Also

[`-  setWidth:ofColumn:`](/documentation/AppKit/NSBrowser/setWidth(_:ofColumn:))

Sets the width of the specified column.


---

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