# RepaintHierarchyWindow()

> Refreshes the Hierarchy window.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor](/engine/6000.6/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public static void RepaintHierarchyWindow()
```

### Remarks

Use [EditorApplication.RepaintHierarchyWindow](/engine/6000.6/script-reference/unityeditor/editorapplication/repainthierarchywindow.md) to refresh the Hierarchy window when changes to GameObjects, such as names, icons, or tags, are not automatically reflected in the Hierarchy window.

`RepaintHierarchyWindow` can be useful when used with custom Editor tools or extensions that dynamically alter GameObject properties. `RepaintHierarchyWindow` can negatively affect Editor performance, so avoid frequent calls in a performance-critical context.

This API is in the `UnityEditor` namespace and can only be used in the Unity Editor. Typically, you combine it with [EditorApplication.hierarchyChanged](/engine/6000.6/script-reference/unityeditor/editorapplication/hierarchychanged.md) or custom events to ensure UI consistency.

Additional Resources: [EditorApplication.HierarchyWindowItemByEntityIdCallback](/engine/6000.6/script-reference/unityeditor/editorapplication/hierarchywindowitembyentityidcallback.md), [EditorApplication.hierarchyWindowItemByEntityIdOnGUI](/engine/6000.6/script-reference/unityeditor/editorapplication/hierarchywindowitembyentityidongui.md).

### Examples

```csharp
using UnityEditor;
using UnityEngine;

[InitializeOnLoad]
public class CustomHierarchyStyling
{

    static CustomHierarchyStyling()
    {
     // Register a callback to draw custom icons in the Hierarchy.
     EditorApplication.hierarchyWindowItemByEntityIdOnGUI += OnHierarchyGUI;
     // Repaint the Hierarchy window when the tag changes to reflect icon updates.
     EditorApplication.hierarchyChanged += () => EditorApplication.RepaintHierarchyWindow();
    }

    static void OnHierarchyGUI(EntityId entityID, Rect selectionRect)
    {

        GameObject obj = EditorUtility.EntityIdToObject(entityID) as GameObject;

        //Add a tag named "Special" to the GameObject to display the custom icon
        if (obj != null && obj.CompareTag("Special"))

        { 
            // Draw a custom icon on the left side of the GameObject in the Hierarchy
            Rect iconRect = new Rect(selectionRect.x - 20, selectionRect.y, 18, 18);
            GUI.Label(iconRect, EditorGUIUtility.IconContent("d_Favorite"));
        }
    }

}
```