---
title: NSSplitViewItem.CollapseBehavior.preferResizingSplitViewWithFixedSiblings
framework: appkit
role: symbol
role_heading: Case
path: appkit/nssplitviewitem/collapsebehavior-swift.enum/preferresizingsplitviewwithfixedsiblings
---

# NSSplitViewItem.CollapseBehavior.preferResizingSplitViewWithFixedSiblings

The item’s preference is to keep the other panes at their current size and position onscreen, potentially growing or shrinking the window in the direction to best preserve that.

## Declaration

```swift
case preferResizingSplitViewWithFixedSiblings
```

## Discussion

Discussion The split view item breaks this preference in full-screen mode, and to keep the window fully onscreen during resizing.

## See Also

### Constants

- [NSSplitViewItem.CollapseBehavior.default](appkit/nssplitviewitem/collapsebehavior-swift.enum/default.md)
- [NSSplitViewItem.CollapseBehavior.preferResizingSiblingsWithFixedSplitView](appkit/nssplitviewitem/collapsebehavior-swift.enum/preferresizingsiblingswithfixedsplitview.md)
- [NSSplitViewItem.CollapseBehavior.useConstraints](appkit/nssplitviewitem/collapsebehavior-swift.enum/useconstraints.md)