winform中文本框，软键盘跟随

   private void textBox1_Click(object sender, EventArgs e)
        {

            //Control.MousePosition
            Point p = System.Windows.Forms.Cursor.Position;
            run(p.X - 250, p.Y + 30);
        }
        [DllImportAttribute("user32.dll", EntryPoint = "MoveWindow")]
        public static extern bool MoveWindow(System.IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);
        /// <summary>
        /// 根据类名和窗口名获取句柄
        /// </summary>
        /// <param name="lpClassName"></param>
        /// <param name="lpWindowName"></param>
        /// <returns></returns>
        [DllImport("user32.dll")]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);


        private static void run(int x, int y)
        {
            Process process = Process.Start("SoftBoard.exe");
            IntPtr windowHandle;
            do
            {
                windowHandle = FindWindow(null, "MainWindow");
            } while (windowHandle == IntPtr.Zero);
            MoveWindow(windowHandle, x, y, 960, 380, true);

            
        }

Process process = Process.Start("SoftBoard.exe");
                process.WaitForInputIdle();
                IntPtr str = process.MainWindowHandle;
                MoveWindow(str, x, y, 515, 262, true);

句柄有时候找不到，用循环比较靠谱