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# isOpaque

A Boolean value indicating whether the view fills its frame rectangle with opaque content.

```
var isOpaque: Bool { get }
```

## Discussion

The default value of this property is <doc://com.apple.documentation/documentation/Swift/false> to reflect the fact that views do no drawing by default. Subclasses can override this property and return <doc://com.apple.documentation/documentation/Swift/true> to indicate that the view completely covers its frame rectangle with opaque content. Doing so can improve performance during drawing operations by eliminating the need to render content behind the view.

## See Also

[`opaqueAncestor`](/documentation/AppKit/NSView/opaqueAncestor)

The view’s closest opaque ancestor, which might be the view itself.


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