c++ - 电源按钮和盖子 sleep 定制

Question

据我所知，Windows 控制面板中只有 sleep /休眠和关机选项可用于响应电源按钮和笔记本电脑盖子关闭:

我编写了一个 Windows 服务，我很好奇是否可以自定义这些选项？主要是我需要能够在让系统进入休眠状态之前注销 Windows 用户。

Answer 1

好的，必须回答我自己的问题。这是我能够找到的:

很容易知道盖子关闭时将执行什么电源操作。这是代码(它必须从用户模式进程运行):

void getLidClosedAction()
{
    GUID* pGuidActivePwrSchm = NULL;
    DWORD dwR = PowerGetActiveScheme(NULL, &pGuidActivePwrSchm);
    if(dwR == ERROR_SUCCESS)
    {
        DWORD val;

        val = -1;
        dwR = PowerReadACValueIndex(NULL, pGuidActivePwrSchm, &GUID_SYSTEM_BUTTON_SUBGROUP, &GUID_LIDCLOSE_ACTION, &val);
        if(dwR == ERROR_SUCCESS)
        {
            _tprintf(L"Lid closed action: ");

            switch(val)
            {
            case 0:
                _tprintf(L"Do nothing\n");
                break;
            case 1:
                _tprintf(L"Sleep\n");
                break;
            case 2:
                _tprintf(L"Hibernate\n");
                break;
            case 3:
                _tprintf(L"Shut-down\n");
                break;
            default:
                _tprintf(L"Unknown value=%d\n", val);
                break;
            }
        }
        else
        {
            _tprintf(L"PowerReadACValueIndex error=%d\n", dwR);
        }


        if(pGuidActivePwrSchm)
        {
            LocalFree(pGuidActivePwrSchm);
            pGuidActivePwrSchm = NULL;
        }
    }
    else
    {
        _tprintf(L"PowerGetActiveScheme error=%d\n", dwR);
    }

}

并且在盖子关闭时设置电源操作也很容易(同样，代码必须在用户模式进程中运行——否则您将需要使用 以外的方式获取电源方案 GUID PowerGetActiveScheme 调用):

BOOL setLidClosedAction(DWORD dwVal)
{
    //'dwVal' = can be one of:
    //          0 = do nothing
    //          1 = sleep
    //          2 = hibernate
    //          3 = shut-down
    BOOL bRes = FALSE;

    GUID* pGuidActivePwrSchm = NULL;
    DWORD dwR = PowerGetActiveScheme(NULL, &pGuidActivePwrSchm);
    if(dwR == ERROR_SUCCESS)
    {
        dwR = PowerWriteACValueIndex(NULL, pGuidActivePwrSchm, &GUID_SYSTEM_BUTTON_SUBGROUP, &GUID_LIDCLOSE_ACTION, dwVal);
        if(dwR == ERROR_SUCCESS)
        {
            bRes = TRUE;
        }
        else
        {
            _tprintf(L"PowerWriteACValueIndex error=%d\n", dwR);
        }

        if(pGuidActivePwrSchm)
        {
            LocalFree(pGuidActivePwrSchm);
            pGuidActivePwrSchm = NULL;
        }
    }
    else
    {
        _tprintf(L"PowerGetActiveScheme error=%d\n", dwR);
    }

    return bRes;
}

这也适用于电源/ sleep 按钮操作。 GUID_SYSTEM_BUTTON_SUBGROUP 中的 GUID 如下:

GUID_POWERBUTTON_ACTION = power button
GUID_SLEEPBUTTON_ACTION = sleep button
GUID_USERINTERFACEBUTTON_ACTION = sometimes another OEM sleep button

不幸的是，我无法看到如何为这些事件设置自定义电源操作。