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# CAAutoresizingMask

These constants are used by the [`autoresizingMask`](/documentation/QuartzCore/CALayer/autoresizingMask) property.

```
struct CAAutoresizingMask
```

## Topics

### Constants

[`init(rawValue:)`](/documentation/QuartzCore/CAAutoresizingMask/init(rawValue:))

[`kCALayerNotSizable`](/documentation/QuartzCore/CAAutoresizingMask/kCALayerNotSizable)

The receiver cannot be resized.

[`layerMinXMargin`](/documentation/QuartzCore/CAAutoresizingMask/layerMinXMargin)

The left margin between the receiver and its superview is flexible.

[`layerWidthSizable`](/documentation/QuartzCore/CAAutoresizingMask/layerWidthSizable)

The receiver’s width is flexible.

[`layerMaxXMargin`](/documentation/QuartzCore/CAAutoresizingMask/layerMaxXMargin)

The right margin between the receiver and its superview is flexible.

[`layerMinYMargin`](/documentation/QuartzCore/CAAutoresizingMask/layerMinYMargin)

The bottom margin between the receiver and its superview is flexible.

[`layerHeightSizable`](/documentation/QuartzCore/CAAutoresizingMask/layerHeightSizable)

The receiver’s height is flexible.

[`layerMaxYMargin`](/documentation/QuartzCore/CAAutoresizingMask/layerMaxYMargin)

The top margin between the receiver and its superview is flexible.


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