/// <summary>设置可以鼠标左键让窗体移动的控件        /// </summary>        /// <param name="form">待移动的窗体，通常是设置了FormBorderStyle = FormBorderStyle.None的窗体</param>        /// <param name="control">能控制窗体左键移动的控件</param>        public static void SetMoveFormControl(Form form, Control control)        {            control.MouseDown += (s, e) =>            {                ReleaseCapture();                SendMessageA((int)form.Handle, 0xa1, 2, 0);            };        }        [DllImport("user32.dll")]        private static extern int ReleaseCapture();        [DllImport("user32.dll")]        private static extern int SendMessageA(int hwnd, int wMsg, int wParam, int lParam);