# columnIndexForTreeFoldouts

> When using a MultiColumnHeader this value should be set to the column index in which the foldout arrows should appear.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor.IMGUI.Controls](/engine/6000.3/script-reference/unityeditor/imgui/controls.md)
* **Assembly:** UnityEditor

```csharp
protected int columnIndexForTreeFoldouts { get; set; }
```

### Remarks

The default value is 0, so by default the foldouts are shown in the first column.