需要在Windows C#/.Net中禁用屏幕保护程序/屏幕锁定

Question

对于特定的应用程序,我需要在屏幕保护程序运行时禁用它.操作员可以手动将其关闭,然后再打开,但最简单的方法是在应用程序运行时保持屏幕保护程序不受影响.

我该怎么做呢？我找到了用SPI_SETSCREENSAVEACTIVE实际关闭屏幕保护程序的代码,但我不认为这就是我想要的.

Answer 1

[FlagsAttribute]
public enum EXECUTION_STATE : uint
{
    ES_SYSTEM_REQUIRED = 0x00000001,
    ES_DISPLAY_REQUIRED = 0x00000002,
    // Legacy flag, should not be used.
    // ES_USER_PRESENT   = 0x00000004,
    ES_AWAYMODE_REQUIRED = 0x00000040,
    ES_CONTINUOUS = 0x80000000,
}

public static class SleepUtil
{
    [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern EXECUTION_STATE SetThreadExecutionState(EXECUTION_STATE esFlags);
}

public void PreventSleep()
{
    if (SleepUtil.SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS
        | EXECUTION_STATE.ES_DISPLAY_REQUIRED  
        | EXECUTION_STATE.ES_SYSTEM_REQUIRED 
        | EXECUTION_STATE.ES_AWAYMODE_REQUIRED) == 0) //Away mode for Windows >= Vista
        SleepUtil.SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS
            | EXECUTION_STATE.ES_DISPLAY_REQUIRED 
            | EXECUTION_STATE.ES_SYSTEM_REQUIRED); //Windows < Vista, forget away mode
}

信用:P/Invoke,死点

Answer 2

theoldnewthing有你的答案:使用SetThreadExecutionState(ES_DISPLAY_REQUIRED).

这被视频播放器和PowerPoint使用.