c# 判断鼠标是否空闲

首先需要一个鼠标钩子了指导鼠标在什么位置

 

using System.Windows.Forms; 
using System.Runtime.InteropServices;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
  
namespace GlobalMouseHook
{
    public class MouseHook
    {
        private const int WM_MOUSEMOVE = 0x200;
        private const int WM_LBUTTONDOWN = 0x201;
        private const int WM_RBUTTONDOWN = 0x204;
        private const int WM_MBUTTONDOWN = 0x207;
        private const int WM_LBUTTONUP = 0x202;
        private const int WM_RBUTTONUP = 0x205;
        private const int WM_MBUTTONUP = 0x208;
        private const int WM_LBUTTONDBLCLK = 0x203;
        private const int WM_RBUTTONDBLCLK = 0x206;
        private const int WM_MBUTTONDBLCLK = 0x209;

        //全局的事件
        public event MouseEventHandler OnMouseActivity;

        static int hMouseHook = 0; //鼠标钩子句柄

        //鼠标常量
        public const int WH_MOUSE_LL  = 14; //mouse hook constant

        HookProc MouseHookProcedure; //声明鼠标钩子事件类型.

        //声明一个Point的封送类型
        [StructLayout(LayoutKind.Sequential)]
        public class POINT
        {
            public int x;
            public int y;
        }

        //声明鼠标钩子的封送结构类型
        [StructLayout(LayoutKind.Sequential)]
        public class MouseHookStruct
        {
            public POINT pt;
            public int hWnd;
            public int wHitTestCode;
            public int dwExtraInfo;
        }

        //装置钩子的函数
        [DllImport("user32.dll",CharSet=CharSet.Auto, CallingConvention=CallingConvention.StdCall)]
        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);

        //卸下钩子的函数
        [DllImport("user32.dll",CharSet=CharSet.Auto, CallingConvention=CallingConvention.StdCall)]
        public static extern bool UnhookWindowsHookEx(int idHook);

        //下一个钩挂的函数
        [DllImport("user32.dll",CharSet=CharSet.Auto, CallingConvention=CallingConvention.StdCall)]
        public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam); 

        public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);

        /// <summary>
        /// 墨认的构造函数构造当前类的实例.
        /// </summary>
        public MouseHook()
        {
        }

        //析构函数.
        ~MouseHook()
        {
        Stop();
        }

        public void Start()
        {
            //安装鼠标钩子
            if(hMouseHook == 0)
            {
                //生成一个HookProc的实例.
                MouseHookProcedure = new HookProc(MouseHookProc);

                hMouseHook = SetWindowsHookEx( WH_MOUSE_LL, MouseHookProcedure, Marshal.GetHINSTANCE(System.Reflection.Assembly.GetExecutingAssembly().GetModules()[0]), 0);

                //如果装置失败停止钩子
                if(hMouseHook == 0 )
                {
                    Stop();
                    throw new Exception("SetWindowsHookEx failed.");
                }
            }
        }

        public void Stop()
        {
            bool retMouse =true;
            if(hMouseHook != 0)
            {
                retMouse = UnhookWindowsHookEx(hMouseHook);
                hMouseHook = 0;
            }

            //如果卸下钩子失败
            if (!(retMouse)) throw new Exception("UnhookWindowsHookEx failed.");
        }

        private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam)
        {
            //如果正常运行并且用户要监听鼠标的消息
            if ((nCode >= 0) && (OnMouseActivity!=null))
            {
                MouseButtons button=MouseButtons.None;
                int clickCount=0;

                switch (wParam)
                {
                case WM_LBUTTONDOWN:
                button=MouseButtons.Left;
                clickCount=1;
                break;
                case WM_LBUTTONUP:
                button=MouseButtons.Left;
                clickCount=1;
                break;
                case WM_LBUTTONDBLCLK:
                button=MouseButtons.Left;
                clickCount=2;
                break;
                case WM_RBUTTONDOWN:
                button=MouseButtons.Right;
                clickCount=1;
                break;
                case WM_RBUTTONUP:
                button=MouseButtons.Right;
                clickCount=1;
                break;
                case WM_RBUTTONDBLCLK:
                button=MouseButtons.Right;
                clickCount=2;
                break;
            }

            //从回调函数中得到鼠标的信息
            MouseHookStruct MyMouseHookStruct = (MouseHookStruct) Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));
            MouseEventArgs e=new MouseEventArgs(button, clickCount, MyMouseHookStruct.pt.x, MyMouseHookStruct.pt.y, 0 );
            //if(e.X>700)return 1;//如果想要限制鼠标在屏幕中的移动区域可以在此处设置
            OnMouseActivity(this, e);
        }
        return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
        }
    }
}

 

然后用timer触发器来判断当前位置和以前位置的difference

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using GlobalMouseHook;
using System.Timers;

namespace testMouseHook
{
    public partial class Form1 : Form
    {
        MouseHook mouse = new MouseHook();
        System.Timers.Timer t =  new System.Timers.Timer(5000); 
        //实例化Timer类，设置间隔时间为10000毫秒；  
        bool first = true;
        Point pre;
        Point cur;

        public Form1()
        {
            InitializeComponent();
            mouse.OnMouseActivity += new MouseEventHandler(mouse_OnMouseActivity);
            mouse.Start();

            t.Elapsed += new System.Timers.ElapsedEventHandler(theout);
            //到达时间的时候执行事件；  
            t.AutoReset = true; 
            //设置是执行一次（false）还是一直执行(true)；  
            t.Enabled = true; 
            //是否执行System.Timers.Timer.Elapsed事件；
 
        }
        void mouse_OnMouseActivity(object sender, MouseEventArgs e) 
        { 
            string str = "X:" + e.X + "  Y:" + e.Y; 
            textBox1.Text = str;
            cur.X = e.X;
            cur.Y = e.Y;
        }

        public void theout( object source, System.Timers.ElapsedEventArgs e)  
        {  
            //MessageBox.Show("OK!");
            if( first ==true )
            {
                pre = cur;
                first = false;
            }
            else
            {
                //cur 是最新的
                if( cur.X == pre.X && cur.Y == pre.Y )
                {
                    MessageBox.Show("idle");
                }
                pre = cur;
            }
        } 
    }

}