Registers the application to receive power setting notifications for the specific power setting event.

Syntax

HPOWERNOTIFY WINAPI RegisterPowerSettingNotification(
  __in  HANDLE hRecipient,
  __in  LPCGUID PowerSettingGuid,
  __in  DWORD Flags
);

Parameters

hRecipient [in]

Handle indicating where the power setting notifications are to be sent. For interactive applications, the Flags parameter should be zero, and the hRecipient parameter should be a window handle. For services, the Flags parameter should be one, and the hRecipient parameter should be a SERVICE_STATUS_HANDLE as returned from RegisterServiceCtrlHandlerEx.

PowerSettingGuid [in]

The GUID of the power setting for which notifications are to be sent. For more information see Registering for Power Events.

Flags [in]

Value	Meaning
DEVICE_NOTIFY_WINDOW_HANDLE 0	Notifications are sent using WM_POWERBROADCAST messages with a wParam parameter of PBT_POWERSETTINGCHANGE.
DEVICE_NOTIFY_SERVICE_HANDLE 1	Notifications are sent to the HandlerEx callback function with a dwControl parameter of SERVICE_CONTROL_POWEREVENT and a dwEventType of PBT_POWERSETTINGCHANGE.

 

Return Value

Returns a notification handle for unregistering for power notifications.

Requirements

See Also

Power Management Functions

Registering for Power Events

UnregisterPowerSettingNotification

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Build date: 5/7/2009