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# setWidth(_:ofColumn:)

Sets the width of the specified column.

```
func setWidth(_ columnWidth: CGFloat, ofColumn columnIndex: Int)
```

## Parameters

`columnWidth`

The new width of the specified column.

`columnIndex`

The index of the column for which to set the width.

## Discussion

This method can be used to set the initial width of browser columns unless the column sizing is automatic; [`setWidth(_:ofColumn:)`](/documentation/AppKit/NSBrowser/setWidth(_:ofColumn:)) does nothing if [`columnResizingType`](/documentation/AppKit/NSBrowser/columnResizingType-swift.property) is [`NSBrowser.ColumnResizingType.autoColumnResizing`](/documentation/AppKit/NSBrowser/ColumnResizingType-swift.enum/autoColumnResizing). To set the default width for new columns (that don’t otherwise have initial widths from defaults or via the delegate), use a `columnIndex` of –1. A value set for `columnIndex` of –1 is persistent. An [`columnConfigurationDidChangeNotification`](/documentation/AppKit/NSBrowser/columnConfigurationDidChangeNotification) notification is posted (not immediately), if necessary, so that the browser can autosave the new column configuration.

## See Also

[`func browser(NSBrowser, shouldSizeColumn: Int, forUserResize: Bool, toWidth: CGFloat) -> CGFloat`](/documentation/AppKit/NSBrowserDelegate/browser(_:shouldSizeColumn:forUserResize:toWidth:))

Used to determine a column’s initial size.


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