Windows 7服务可以接收电源状态通知吗? [英] Can a Windows 7 Service receive Power State notifications?

问题描述

我正在为Windows 7编写服务，由于要与之交互的设备，我需要了解电源状态的变化.我在MSDN上发现的有关这些事件的唯一通知是通过WM_POWERBROADCAST发出的.

现在，我已经知道我无法在服务中接收Windows消息.还有其他方法可以了解这种状态变化吗?我需要知道一台机器是否正在休眠，睡眠，正在做什么，以便避免意外行为.

I am writing a service for Windows 7, and because of the devices I''m interacting with, I need be aware of power state changes. The only notifications I''ve found on MSDN for these events come through WM_POWERBROADCAST.

Now, I already know I can''t recieve Windows messages in a service. Is there there any other way to become aware of this state change? I need to know if a machine is hibernating, sleeping, what-have-you, so I can avoid unexpected behavior.

推荐答案

您需要使用 RegisterServiceCtrlHandlerEx [ HandlerEx [ WM_POWERBROADCAST [

You need to use the RegisterServiceCtrlHandlerEx[^] when you register your HandlerEx[^] function.

When dwControl is SERVICE_CONTROL_POWEREVENT dwEventType provide the various PBT_ values you would receive in the wParam of a WM_POWERBROADCAST[^] event.

Best regards
Espen Harlinn

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