W8 服务的连接待机通知-C/C++问题

Connected standby notification for a W8 Service(W8 服务的连接待机通知)

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问题描述

我有一个服务，用 C++ 开发，在 Windows 8(和 8.1)上运行.怎样才能知道系统已经进入连接待机?

I have a service, developed in C++ running on Windows 8 (and 8.1). How can I get to know that the system has entered Connected Standby?

由于这是一项服务，它没有窗口，我应该使用 PowerRegisterSuspendResumeNotification，但它似乎不起作用.有谁知道我怎么能收到这样的通知?

Since this is a service, it does not have a window, I should be using PowerRegisterSuspendResumeNotification, but it does not seem to be working. Does anyone know how I can get such a notification?

推荐答案

我已经联系了 Microsoft 的技术支持.这是他们的回答:

I have contacted Microsoft's technical support. This is their answer:

对于 ConnectedStandby 进入/退出没有直接通知，但您可以只使用监视器开/关通知，因为 ConnectedStandby 与支持 AOAC 的系统上的屏幕关闭同义(但不是在旧系统上，AOAC 功能可以通过使用 CallNtPowerInformation 获取 SystemPowerCapabilities 并查看 SYSTEM_POWER_CAPABILITIES 结构的 AoAc 值而获得).

There are no direct notifications for ConnectedStandby enter/exit, but you can just use the monitor on/off notifications since ConnectedStandby is synonymous with screen off on an AOAC capable system (but is not on a legacy system, AOAC capability can be had by getting SystemPowerCapabilities using CallNtPowerInformation and looking at the AoAc value of the SYSTEM_POWER_CAPABILITIES struct).

要获取显示器开/关通知，您可以使用 RegisterPowerSettingNotification 并使用 GUID_MONITOR_POWER_ON 电源设置 GUID.

To get monitor on/off notifications you can use RegisterPowerSettingNotification and use the GUID_MONITOR_POWER_ON power setting GUID.

看起来只有通过监听屏幕开/关事件来解决这个问题.

Looks like there is only a workaround for this by listening to screen on/off events.

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