您可能需要一些p调用，特别是GetLastInputInfo窗口函数。 它告诉您何时为当前用户检测到最后一个输入（键盘，鼠标）。

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internal class Program { private static void Main() { // don't run timer too often, you just need to detect 10-minutes idle, so running every 5 minutes or so is ok var timer = new Timer(_ => { var last = new LASTINPUTINFO(); last.cbSize = (uint)LASTINPUTINFO.SizeOf; last.dwTime = 0u; if (GetLastInputInfo(ref last)) { var idleTime = TimeSpan.FromMilliseconds(Environment.TickCount - last.dwTime); // Console.WriteLine("Idle time is: {0}", idleTime); if (idleTime > TimeSpan.FromMinutes(10)) { // shutdown here } } }, null, TimeSpan.FromMinutes(1), TimeSpan.FromMinutes(1)); Console.ReadKey(); timer.Dispose(); } [DllImport("user32.dll")] public static extern bool GetLastInputInfo(ref LASTINPUTINFO info); [StructLayout(LayoutKind.Sequential)] public struct LASTINPUTINFO { public static readonly int SizeOf = Marshal.SizeOf(typeof (LASTINPUTINFO)); [MarshalAs(UnmanagedType.U4)] public UInt32 cbSize; [MarshalAs(UnmanagedType.U4)] public UInt32 dwTime; } }