c# - 从 Windows 服务调用时，SetThreadExecutionState 不起作用

Question

我想阻止系统从 Windows 服务进入休眠/休眠状态。我正在调用 SetThreadExecutionState 函数来执行此操作。不过好像没什么效果。我只想知道 SetThreadExecutionState 函数是否适用于 Windows 服务。如果不是，还有什么替代方法。

下面是我正在使用的 C# 代码。我在 Onstart 服务方法上调用它。

[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern uint SetThreadExecutionState(EXECUTION_STATE esFlags);
private void KeepAlive() 
{
     SetThreadExecutionState(EXECUTION_STATE.ES_DISPLAY_REQUIRED | EXECUTION_STATE.ES_SYSTEM_REQUIRED | EXECUTION_STATE.ES_CONTINUOUS)
}

Answer 1

Calling SetThreadExecutionState without ES_CONTINUOUS simply resets the idle timer; to keep the display or system in the working state, the thread must call SetThreadExecutionState periodically.

( source )

您需要不时调用此函数。这不是即发即弃。