# OnInspectorGUI()

> Implement specific MaterialEditor GUI code here. If you want to simply extend the existing editor call the base OnInspectorGUI () before doing any custom GUI code.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor](/engine/6000.5/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public override void OnInspectorGUI()
```