# IPostprocessLaunch

> Interface for receiving a callback after the application is launched on a target device.

## Definition

* **Type:** Interface
* **Namespace:** [UnityEditor.Build](/engine/6000.7/script-reference/unityeditor/build.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public interface IPostprocessLaunch : IOrderedCallback
```

## Remarks

Unity invokes `OnPostprocessLaunch` callback after attempting to launch the application. For more information about build callbacks, refer to [Use build callbacks](/engine/6000.7/manual/building-and-publishing/build-customize-build-pipeline/build-callbacks.md)

## Methods

| Method                                                                                                             | Description                                                                                 |
| ------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------- |
| [OnPostprocessLaunch](/engine/6000.7/script-reference/unityeditor/build/ipostprocesslaunch/onpostprocesslaunch.md) | Implement this method to receive a callback after Unity attempts to launch the application. |

## Inheritance

**Inherited Members:**

* [IOrderedCallback.callbackOrder](/engine/6000.7/script-reference/unityeditor/build/iorderedcallback/callbackorder.md)