---
title: "tableView(_:userCanChangeVisibilityOf:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nstableviewdelegate/tableview(_:usercanchangevisibilityof:)"
---

# tableView(_:userCanChangeVisibilityOf:)

Asks the delegate to verify that the user can change the given column’s visibility.

## Declaration

```swift
optional func tableView(_ tableView: NSTableView, userCanChangeVisibilityOf column: NSTableColumn) -> Bool
```

## Parameters

- `tableView`: The table view object requesting this information.
- `column`: The table column affected by the visibility change.

## Return Value

Return Value true if the user can change the visibility of the column; otherwise, false.

## Discussion

Discussion Implement this method to enable the table view to provide a menu that allows users to show or hide table columns. To change a column’s visibility, ensure the column has a title. Further, setting the menu property on the table view headerView or, subclassing NSTableHeaderView and overriding the menu property also prevents the column visibility from changing.

## See Also

### Showing and hiding columns

- [tableView(_:userDidChangeVisibilityOf:)](appkit/nstableviewdelegate/tableview(_:userdidchangevisibilityof:).md)