SystemEvents::PowerModeChanged Event

 

Occurs when the user suspends or resumes the system.

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

public:
event PowerModeChangedEventHandler^ PowerModeChanged {
	static void add(PowerModeChangedEventHandler^ value);
	static void remove(PowerModeChangedEventHandler^ value);
}

Exception Condition
InvalidOperationException

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

ExternalException

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

System_CAPS_noteNote

This event is only raised if the message pump is running. In a Windows service, unless a hidden form is used or the message pump has been started manually, this event will not be raised. For a code example that shows how to handle system events by using a hidden form in a Windows service, see the SystemEvents class.

System_CAPS_cautionCaution

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

.NET Framework
Available since 1.1
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