C#对鼠标的操作

using System;

using System.Drawing;

using System.Windows.Forms;

using System.Runtime.InteropServices;



namespace test

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        //获取双击间隔时间

        [DllImport("user32.dll", EntryPoint = "GetDoubleClickTime")]

        public extern static int GetDoubleClickTime(); 

        //获取鼠标键数目

        public const int SM_CMOUSEBUTTONS = 43;//定义一个常量值

        [DllImport("user32",EntryPoint="GetSystemMetrics")]

        public extern static int GetSystemMetrics(int intcoutn);

        private void Form1_Load(object sender, EventArgs e)

        {

            //设置定时器

            this.timer1.Enabled = true;

            this.timer1.Interval = 1000;

            this.label1.Text ="鼠标双击间隔时间是："+GetDoubleClickTime() + "ms";

            this.label2.Text = "鼠标键数是:" + GetSystemMetrics(SM_CMOUSEBUTTONS) + "个";

        }



        private void Form1_MouseMove(object sender, MouseEventArgs e)

        {

            //this.label3.Text = e.X.ToString();

            //this.label4.Text = e.Y.ToString();

        }

        //定时获取光标位置

        [DllImport("user32.dll")]

        private static extern bool GetCursorPos(out Point lpPoint);

        //定时设置光标位置  

        [DllImport("user32")]

        static extern bool SetCursorPos(int X, int Y);

        //发送鼠标消息

        [DllImport("user32.dll")]

        //引入API函数mouse_event

        private static extern int mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo);

        const int MOUSEEVENTF_MOVE = 0x0001;//表示鼠标移动

        const int MOUSEEVENTF_LEFTDOWN = 0x0002;//表示鼠标左键按下

        const int MOUSEEVENTF_LEFTUP = 0x0004;//表示鼠标左键松开



        private void timer1_Tick(object sender, EventArgs e)

        {

            Point ShowPoint = new Point();

            GetCursorPos(out ShowPoint);

            this.label3.Text = ShowPoint.X.ToString();

            this.label4.Text = ShowPoint.Y.ToString();

            //设置鼠标位置

            SetCursorPos(509,53);

            //发送左键按下消息

            mouse_event(MOUSEEVENTF_LEFTDOWN, 509, 53, 0, 0);

            //发送字符

            SendKeys.Send("a");

        }

    }

}