---
title: titlebarSeparatorStyle
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nssplitviewitem/titlebarseparatorstyle
---

# titlebarSeparatorStyle

The type of separator that the app displays between the title bar and content of a window.

## Declaration

```swift
var titlebarSeparatorStyle: NSTitlebarSeparatorStyle { get set }
```

## Discussion

Discussion To apply this value, you must associate the item’s view with its own title bar section. The default value is NSTitlebarSeparatorStyle.automatic. The containing window’s preference can override this preference.

## See Also

### Customizing appearance

- [allowsFullHeightLayout](appkit/nssplitviewitem/allowsfullheightlayout.md)
- [NSTitlebarSeparatorStyle](appkit/nstitlebarseparatorstyle.md)