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# preferredScreenOrigin

For a view controller that is part of an app extension, the preferred screen origin.

```
var preferredScreenOrigin: NSPoint { get set }
```

## Discussion

Set this property to position the lower-left corner of the app extension’s  primary view in screen space. To specify the desired primary view size for an app extension’s view controller, use the [`preferredContentSize`](/documentation/AppKit/NSViewController/preferredContentSize) property.

## See Also

[`preferredContentSize`](/documentation/AppKit/NSViewController/preferredContentSize)

The desired size of the view controller’s view, in screen units.


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