---
title: NSMenu.SelectionMode.selectOne
framework: appkit
role: symbol
role_heading: Case
path: appkit/nsmenu/selectionmode-swift.enum/selectone
---

# NSMenu.SelectionMode.selectOne

A selection mode where someone can select at most one menu item in the same selection group at the same time.

## Declaration

```swift
case selectOne
```

## Discussion

Discussion A change in selection deselects any previously selected item.

## See Also

### Defining the selection mode

- [NSMenu.SelectionMode.automatic](appkit/nsmenu/selectionmode-swift.enum/automatic.md)
- [NSMenu.SelectionMode.selectAny](appkit/nsmenu/selectionmode-swift.enum/selectany.md)