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# NSButton.GradientType

Specify the gradients used by the [`gradientType`](/documentation/AppKit/NSButtonCell/gradientType) property.

```
enum GradientType
```

## Topics

### Constants

[`NSButton.GradientType.none`](/documentation/AppKit/NSButton/GradientType/none)

There is no gradient, so the button looks flat.

[`NSButton.GradientType.concaveWeak`](/documentation/AppKit/NSButton/GradientType/concaveWeak)

The top-left corner is light gray, and the bottom-right corner is dark gray, so the button appears to be pushed in.

[`NSButton.GradientType.concaveStrong`](/documentation/AppKit/NSButton/GradientType/concaveStrong)

As with `NSGradientConcaveWeak`, the top-left corner is light gray, and the bottom-right corner is dark gray, but the difference between the grays is greater, so the appearance of being pushed in is stronger.

[`NSButton.GradientType.convexWeak`](/documentation/AppKit/NSButton/GradientType/convexWeak)

The top-left corner is dark gray, and the bottom-right corner is light gray, so the button appears to be sticking out.

[`NSButton.GradientType.convexStrong`](/documentation/AppKit/NSButton/GradientType/convexStrong)

As with `NSGradientConvexWeak`, the top-left corner is dark gray, and the bottom-right corner is light gray, but the difference between the grays is greater, so the appearance of sticking out is stronger.


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