# allowToggleVisibility

> Option to allow/disallow hiding the column from the context menu.

## Definition

* **Type:** Field
* **Namespace:** [UnityEditor.IMGUI.Controls](/engine/6000.5/script-reference/unityeditor/imgui/controls.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public bool allowToggleVisibility
```

### Remarks

This state is used by the context menu of the MultiColumnHeader to enable/disable the column names in the menu. Ensure at least one column does not allow to toggle visibility so not all the columns can be hidden. When used with a TreeView it would be a good idea to disallow hiding the column with the TreeView foldout arrows.