---
title: NSVisualEffectView.BlendingMode.behindWindow
framework: appkit
role: symbol
role_heading: Case
path: appkit/nsvisualeffectview/blendingmode-swift.enum/behindwindow
---

# NSVisualEffectView.BlendingMode.behindWindow

A mode that blends and blurs the visual effect view with the contents behind the window, such as the desktop or other windows.

## Declaration

```swift
case behindWindow
```

## Discussion

Discussion Views using this blending mode can overlap, and the view lower in the hierarchy “wins”.

## See Also

### Blend Modes

- [NSVisualEffectView.BlendingMode.withinWindow](appkit/nsvisualeffectview/blendingmode-swift.enum/withinwindow.md)