Alsing.Windows.Forms.CoreLib.IntelliMouseControl.OnMouseDown C# (CSharp) Метод

        protected override void OnMouseDown(MouseEventArgs e)
        {
            base.OnMouseDown(e);
            if (Active)
            {
                if (e.Button != MouseButtons.None && (e.Button != MouseButtons.Middle && e.X != 0 && e.Y != 0))
                {
                    Deactivate();
                    var p = new Point(e.X + Left, e.Y + Top);
                    NativeMethods.SendMessage(Parent.Handle, WM_LBUTTONDOWN, 0, p.Y*0x10000 + p.X);
                }
            }
        }