---
title: auxiliaryTopLeftArea
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nsscreen/auxiliarytopleftarea-uglc
---

# auxiliaryTopLeftArea

The unobscured portion of the top-left corner of the screen.

## Declaration

```swift
var auxiliaryTopLeftArea: NSRect? { get }
```

## Discussion

Discussion If the top inset of the screen’s safeAreaInsets property contains a non-zero value, the rectangle in this property is the visible top-left portion of the screen. The rectangle is specified in global screen coordinates and lies outside the safe area. If the top portion of the screen isn’t obscured, the value of this property is nil in Swift; in Objective-C, the value is NSZeroRect. If your app offers a custom full-screen experience, use this property to determine what additional space is available for your custom content. The specified rectangle is safe to use to display your content.

## See Also

### Getting the Visible Portion of the Screen

- [visibleFrame](appkit/nsscreen/visibleframe.md)
- [safeAreaInsets](appkit/nsscreen/safeareainsets.md)
- [auxiliaryTopRightArea](appkit/nsscreen/auxiliarytoprightarea-gr2n.md)