# Application.Callback class

Namespace: [Eto.Forms](https://eto.picoe.ca/api/namespace/eto.forms.md) · Assembly: [Eto](https://eto.picoe.ca/api/assembly/eto.md)

```cs
protected class Application.Callback : Application.ICallback
```

Callback implementation for the [Application](https://eto.picoe.ca/api/type/eto.forms.application.md) class

## Methods

- [OnInitialized](https://eto.picoe.ca/api/type/eto.forms.application.callback/oninitialized.md): Raises the initialized event.
- [OnIsActiveChanged](https://eto.picoe.ca/api/type/eto.forms.application.callback/onisactivechanged.md): Raises the IsActiveChanged event.
- [OnNotificationActivated](https://eto.picoe.ca/api/type/eto.forms.application.callback/onnotificationactivated.md): Raises the notification activated event.
- [OnTerminating](https://eto.picoe.ca/api/type/eto.forms.application.callback/onterminating.md): Raises the terminating event.
- [OnThemeChanged](https://eto.picoe.ca/api/type/eto.forms.application.callback/onthemechanged.md): Raises the [Application.ThemeChanged](https://eto.picoe.ca/api/type/eto.forms.application/themechanged.md) event.
- [OnUnhandledException](https://eto.picoe.ca/api/type/eto.forms.application.callback/onunhandledexception.md): Raises the unhandled exception event.