# projectWindowChanged

> Callback raised whenever the state of the Project window changes.

## Definition

* **Type:** Field
* **Namespace:** [UnityEditor](/engine/6000.0/script-reference/unityeditor.md)
* **Assembly:** UnityEditor

> **Warning:**
>
> **Deprecated.** Use EditorApplication.projectChanged

```csharp
public static EditorApplication.CallbackFunction projectWindowChanged
```

### Remarks

This callback is raised whenever the state of the Unity Editor's Project window changes - for example, when an Asset is created, removed, renamed or or reparented. This example is not exhaustive; any Asset change or folder re-arrangement that is reflected in the Project window triggers this callback.