using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;


//----------------------------------------------------------------
//Module Name:  $safeprojectname$
//Purpose:      
//CopyRight:    Muchinfo
//History:
//----------------------------------------------------------------
//DateTime		2016/12/21 17:19:12
//Author       
//Description   Create
//----------------------------------------------------------------

namespace Muchinfo.MTPClient.Infrastructure.Utilities
{
    public class GetLastInputInfoHelper
    {
        [DllImport("user32.dll")]
        internal static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);

        /// <summary> 
        /// 获取鼠标键盘不活动的时间 
        /// </summary> 
        /// <returns>结果</returns> 
        public static int GetLastInputTime()
        {
            LASTINPUTINFO lastInputInfo = new LASTINPUTINFO();
            lastInputInfo.cbSize = Marshal.SizeOf(lastInputInfo);
            lastInputInfo.dwTime = 0;

            int idleTime = 0;
            if (GetLastInputInfo(ref lastInputInfo))
            {
                idleTime = Environment.TickCount - lastInputInfo.dwTime;
            }

            return ((idleTime > 0) ? (idleTime / (1000*60)) : 0);
        }
    }

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