Occurs when an application stops being the foreground application.
Assembly: PresentationFramework (in PresentationFramework.dll)
A Windows Presentation Foundation (WPF) application that has one or more open windows deactivates (stops being the foreground application) when a user does the following:
Switches to another application by using ALT+TAB or by using Task Manager.
Clicks the taskbar button for a window in another application.
Applications that need to detect deactivation can handle theevent.
After an application is first activated, it may be deactivated and reactivated many times during its lifetime. If an application's behavior or state depends on its activation state, it can handle both Activated events to determine which state it's in.and
is not raised for XAML browser applications (XBAPs).
The following example shows how to detect when a standalone application deactivates and activates.
<Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="SDKSample.App" StartupUri="MainWindow.xaml" Activated="App_Activated" Deactivated="App_Deactivated" />
Available since 3.0