winform模拟鼠标按键的具体实现

[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
          private static extern int mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo);
          const int MOUSEEVENTF_MOVE = 0x0001;      //移动鼠标
        const int MOUSEEVENTF_LEFTDOWN = 0x0002; //模拟鼠标左键按下
        const int MOUSEEVENTF_LEFTUP = 0x0004; //模拟鼠标左键抬起
        const int MOUSEEVENTF_RIGHTDOWN = 0x0008; //模拟鼠标右键按下
        const int MOUSEEVENTF_RIGHTUP = 0x0010; //模拟鼠标右键抬起
        const int MOUSEEVENTF_MIDDLEDOWN = 0x0020; //模拟鼠标中键按下
        const int MOUSEEVENTF_MIDDLEUP = 0x0040; //模拟鼠标中键抬起
        const int MOUSEEVENTF_ABSOLUTE = 0x8000; //标示是否采用绝对坐标

        public Form1()
        {
            InitializeComponent();
        }

          private void timer1_Tick(object sender, EventArgs e)
        {
            if (rbtnClick.Checked)
            {
                mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, Cursor.Position.X, Cursor.Position.Y, 0, 0);
            }
            if (rbtnDoubClick.Checked)
            {
                mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP | MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, Cursor.Position.X, Cursor.Position.Y, 0, 0);
            }
        }

private void Form1_Resize(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
            {
                notifyIcon1.Visible = true;
                this.Hide();
                this.ShowInTaskbar = false;//是否在windows任务栏中显示窗体
            }
        }

private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (!this.ShowInTaskbar)
            {              
                this.ShowInTaskbar = true;
                this.Show();
                this.Activate();
                this.WindowState = FormWindowState.Normal;
            }
        }