---
title: "outlineView(_:userDidChangeVisibilityOf:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nsoutlineviewdelegate/outlineview(_:userdidchangevisibilityof:)"
---

# outlineView(_:userDidChangeVisibilityOf:)

## Declaration

```swift
@MainActor optional func outlineView(_ outlineView: NSOutlineView, userDidChangeVisibilityOf columns: [NSTableColumn])
```

## See Also

### Changing Visibility

- [outlineView(_:userCanChangeVisibilityOf:)](appkit/nsoutlineviewdelegate/outlineview(_:usercanchangevisibilityof:).md)