如何当鼠标和键盘长时间不动的时候让程序自动退出?
如何当鼠标和键盘长时间不动的时候让程序自动退出?
是不是要捕获键盘和鼠标的消息?

------解决方案--------------------
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential)]
struct LASTINPUTINFO
{
[MarshalAs(UnmanagedType.U4)]
public int cbSize;
[MarshalAs(UnmanagedType.U4)]
public uint dwTime;
}

[DllImport( "user32.dll ")]
static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);

static long GetLastInputTime()
{
LASTINPUTINFO vLastInputInfo = new LASTINPUTINFO();
vLastInputInfo.cbSize = Marshal.SizeOf(vLastInputInfo);
if (!GetLastInputInfo(ref vLastInputInfo)) return 0;
return Environment.TickCount - (long)vLastInputInfo.dwTime;
}

private void Form1_Load(object sender, EventArgs e)
{
timer1.Enabled = true;
}

private void timer1_Tick(object sender, EventArgs e)
{
Text = string.Format( "用户已经{0}秒没有路过了 ", GetLastInputTime() / 1000);
//比如： if (GetLastInputTime() > 1000 * 60) Close(); //用户一分钟不操作
}