---
title: NSPopover.Behavior.semitransient
framework: appkit
role: symbol
role_heading: Case
path: appkit/nspopover/behavior-swift.enum/semitransient
---

# NSPopover.Behavior.semitransient

The system will close the popover when the user interacts with user interface elements in the window containing the popover’s positioning view.

## Declaration

```swift
case semitransient
```

## Discussion

Discussion Semi-transient popovers cannot be shown relative to views in other popovers, nor can they be shown relative to views in child windows. The exact interactions that cause semi-transient popovers to close are not specified.

## See Also

### Constants

- [NSPopover.Behavior.applicationDefined](appkit/nspopover/behavior-swift.enum/applicationdefined.md)
- [NSPopover.Behavior.transient](appkit/nspopover/behavior-swift.enum/transient.md)