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# fullSizeContentView

When set, the window’s [`contentView`](/documentation/AppKit/NSWindow/contentView) consumes the full size of the window. Although you can combine this constant with other window style masks, it is respected only for windows with a title bar. Note that using this mask opts in to layer-backing. Use the [`contentLayoutRect`](/documentation/AppKit/NSWindow/contentLayoutRect) or the [`contentLayoutGuide`](/documentation/AppKit/NSWindow/contentLayoutGuide) to lay out views underneath the title bar–toolbar area.

```
static var fullSizeContentView: NSWindow.StyleMask { get }
```

---

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