C# 实现模拟控制鼠标点击事件

        /// <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 / 2;
            loginy = winHeight / 2;
            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 button1_Click(object sender, EventArgs e)
        {
            SetMouseAtCenterScreen();//模拟鼠标移动到指定坐标
            mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, loginx, loginy, 0, 0);//模拟鼠标点击
        }