C#实现模拟鼠标点击事件（点击桌面的其他程序 ）

注释感觉已经很清楚了，有不懂的欢迎评论

 1 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            this.Hide();
        }
        /// <summary>
        /// 引用user32.dll动态链接库（windows api），
        /// 使用库中定义 API：SetCursorPos 
        /// </summary>
        [DllImport("user32.dll")]
        private static extern int SetCursorPos(int x, int y);
        /// <summary>
        /// 移动鼠标到指定的坐标点
        /// </summary>
        public void MoveMouseToPoint(Point p)
        {
            SetCursorPos(p.X, p.Y);
        }
        /// <summary>
        /// 设置鼠标的移动范围
        /// </summary>
        public void SetMouseRectangle(Rectangle rectangle)
        {
            System.Windows.Forms.Cursor.Clip = rectangle;
        }
        /// <summary>
        /// 设置鼠标位于屏幕中心
        /// </summary>
        public void SetMouseAtCenterScreen()
        {
            //当前屏幕的宽高
            int winHeight = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height;
            int winWidth = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width;
            //设置鼠标的x，y位置
            loginx = winWidth / 3 * 2;
            loginy = winHeight / 4 + 5;
            Point centerP = new Point(loginx, loginy);
            //移动鼠标
            MoveMouseToPoint(centerP);
        }
        //点击事件
        [DllImport("User32")]
        //下面这一行对应着下面的点击事件
        //    public extern static void mouse_event(int dwFlags, int dx, int dy, int dwData, IntPtr dwExtraInfo);
        public extern static void mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo);
        public const int MOUSEEVENTF_LEFTDOWN = 0x2;
        public const int MOUSEEVENTF_LEFTUP = 0x4;
        public enum MouseEventFlags
        {
            Move = 0x0001, //移动鼠标
            LeftDown = 0x0002,//模拟鼠标左键按下
            LeftUp = 0x0004,//模拟鼠标左键抬起
            RightDown = 0x0008,//鼠标右键按下
            RightUp = 0x0010,//鼠标右键抬起
            MiddleDown = 0x0020,//鼠标中键按下 
            MiddleUp = 0x0040,//中键抬起
            Wheel = 0x0800,
            Absolute = 0x8000//标示是否采用绝对坐标
        }
        //鼠标将要到的x，y位置
        public static int loginx, loginy;
        private void Form1_Load(object sender, EventArgs e)
        {


            //移动鼠标
            SetMouseAtCenterScreen();


            //mouse_event((int)(MouseEventFlags.LeftDown | MouseEventFlags.Absolute), loginx, loginy, 0, IntPtr.Zero);

            //mouse_event((int)(MouseEventFlags.LeftUp | MouseEventFlags.Absolute), loginx, loginy, 0, IntPtr.Zero);
            //点击两次
            mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, loginx, loginy, 0, 0);

            mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, loginx, loginy, 0, 0);

        }
    }
}