/// <summary>
        /// Return the crosshairs to middle position
        /// </summary>
        public override void ResetCrosshairs(Control parentCtl)
        {
            CrossHairsControl crossHairsCtl = GetCrossHairsCtl(parentCtl);

            if (crossHairsCtl != null)
            {
                crossHairsCtl.ResetCrossHairs();
            }
        }
        public override void CrossHairs(Control parentWindow, bool showCrossHairs)
        {
            CrossHairsControl crossHairsCtl = GetCrossHairsCtl(parentWindow);

            if (crossHairsCtl != null)
            {
                crossHairsCtl.ShowCrossHairs = showCrossHairs;
                crossHairsCtl.ResetCrossHairs();
            }
        }