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Window.Activated Event

Occurs when a window becomes the foreground window.

Namespace: System.Windows
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public event EventHandler Activated
/** @event */
public void add_Activated (EventHandler value)

/** @event */
public void remove_Activated (EventHandler value)

In JScript, you can handle the events defined by a class, but you cannot define your own.
<object Activated="EventHandler" .../>

A window is activated (becomes the foreground window) when:

  • The window is first opened.

  • A user switches to a window by selecting it with the mouse, pressing ALT+TAB, or from Task Manager.

  • A user clicks the window's taskbar button.

Windows that need to detect when they become activate can handle the Activated event.

After a window 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 inspect IsActive to determine which activation state it's in.

An application can also be Activated.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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