The Launching Event:
A user can launch a new instance of your app by selecting it from the installed applications list or from a Tile on Start in addition to other means, such as tapping on a toast notification associated with the app or selecting the app from the Photos Extras menu.
The Deactivated Event:
The Deactivated event is raised when the user navigates forward, away from your app, by pressing theStart button or by launching another application.
The Activated Event:
The Activated event is called when the user returns to a dormant or tombstoned app. Your app should check the IsApplicationInstancePreserved property of the event args to determine whether it is returning from being dormant or tombstoned.
The Closing Event:
The Closing event is raised when the user navigates backwards past the first page of an app. In this case, the app is terminated and no state is saved.
