PowerModeChanged Event

SystemEvents.PowerModeChanged Event

Occurs when the user suspends or resumes the system.

Namespace: Microsoft.Win32
Assembly: System (in system.dll)

Public Shared Event PowerModeChanged As PowerModeChangedEventHandler
Dim handler As PowerModeChangedEventHandler

AddHandler SystemEvents.PowerModeChanged, handler

/** @event */
public static void add_PowerModeChanged (PowerModeChangedEventHandler value)

/** @event */
public static void remove_PowerModeChanged (PowerModeChangedEventHandler value)

JScript supports the use of events, but not the declaration of new ones.

Exception typeCondition


System event notifications are not supported under the current context. Server processes, for example, might not support global system event notifications.


The attempt to create a system events window thread did not succeed.

Caution noteCaution

Because this is a static event, you must detach your event handlers when your application is disposed, or memory leaks will result.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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