# GetNumVisibleColumns()

> If using a MultiColumnHeader for the TreeView use this method to get the number of visible columns currently being shown in the MultiColumnHeader.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor.IMGUI.Controls](/engine/6000.7/script-reference/unityeditor/imgui/controls.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public int GetNumVisibleColumns()
```

### Returns

| Type                                                       | Description |
| ---------------------------------------------------------- | ----------- |
| [int](https://learn.microsoft.com/dotnet/api/system.int32) |             |

### Remarks

Additional Resources: [TreeView.RowGUIArgs.GetCellRect](/engine/6000.7/script-reference/unityeditor/imgui/controls/treeview/rowguiargs/getcellrect.md).