# focusChanged

> This has the same functionality as Application.focusChanged. At the moment, the Device Simulator doesn't support simulation of this event.

## Definition

* **Type:** Event
* **Namespace:** [UnityEngine.Device](/engine/6000.6/script-reference/unityengine/device.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public static event Action<bool> focusChanged
```