SystemEvents::PowerModeChanged Event
.NET Framework (current version)
Occurs when the user suspends or resumes the system.
Assembly: System (in System.dll)
| 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. |
Note |
|---|
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. |
Caution |
|---|
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
Available since 1.1
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