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# NSVisualEffectView.BlendingMode

Constants that specify whether the visual effect view blends with what’s either behind or within the window.

```
enum BlendingMode
```

## Topics

### Blend Modes

[`NSVisualEffectBlendingModeBehindWindow`](/documentation/AppKit/NSVisualEffectView/BlendingMode-swift.enum/behindWindow)

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

[`NSVisualEffectBlendingModeWithinWindow`](/documentation/AppKit/NSVisualEffectView/BlendingMode-swift.enum/withinWindow)

A mode that blends and blurs the visual effect view with contents behind the view in the current window only.

## Relationships

### Conforms To

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`Equatable`](/documentation/Swift/Equatable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Hashable`](/documentation/Swift/Hashable)

[`Sendable`](/documentation/Swift/Sendable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

---

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