using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.InteropServices;

using System.Text;

using System.Threading.Tasks;

namespace ATMDefendCabinEventVideoForm

{

public class CheckComputerFreeState

{

/// <summary>

/// 创建结构体用于返回捕获时间

/// </summary>

[StructLayout(LayoutKind.Sequential)]

struct LASTINPUTINFO

{

/// <summary>

/// 设置结构体块容量

/// </summary>

[MarshalAs(UnmanagedType.U4)]

public int cbSize;

/// <summary>

/// 抓获的时间

/// </summary>

[MarshalAs(UnmanagedType.U4)]

public uint dwTime;

}

[DllImport("user32.dll")]

private static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);

/// <summary>

/// 获取键盘和鼠标没有操作的时间

/// </summary>

/// <returns>用户上次使用系统到现在的时间间隔，单位为秒</returns>

public static long GetLastInputTime()

{

LASTINPUTINFO vLastInputInfo = new LASTINPUTINFO();

vLastInputInfo.cbSize = Marshal.SizeOf(vLastInputInfo);

if (!GetLastInputInfo(ref vLastInputInfo))

{

return 0;

}

else

{

Console.WriteLine("TickCount=" + Environment.TickCount);

Console.WriteLine("vLastInputInfo.dwTime=" + vLastInputInfo.dwTime);

Console.WriteLine("vLastInputInfo.dwTime & Int32.MaxValue=" + (vLastInputInfo.dwTime & Int32.MaxValue));

var count = Environment.TickCount & Int32.MaxValue - (long)(vLastInputInfo.dwTime & Int32.MaxValue);

var icount = count / 1000;

return icount;

}

}

public static long GetLastInputTimeMinute()

{

LASTINPUTINFO vLastInputInfo = new LASTINPUTINFO();

vLastInputInfo.cbSize = Marshal.SizeOf(vLastInputInfo);

if (!GetLastInputInfo(ref vLastInputInfo))

{

return 0;

}

else

{

var count = Environment.TickCount - (long)vLastInputInfo.dwTime;

var icount = count / (1000*60);

return icount;

}

}

}

}