MARKUS

        /// call when mouse is moving while drawing control

        /// </summary>

        /// <param name="pt"></param>

        /// <param name="bAxisLocked"></param>

        public override void OnCreatingMouseMove(Point pt, bool bAxisLocked, bool bShiftKeyPressed)

        {

            this.EndPoint = bShiftKeyPressed ? this.GetSquareEndPoint(this.StartPoint, pt) : pt;

            this.LeftBottomPoint = new Point(this.StartPoint.X, this.EndPoint.Y);

            this.TopRightPoint = new Point(this.EndPoint.X, this.StartPoint.Y);

            this.PointSet = new List<Point>

            {

                this.StartPoint,

                this.LeftBottomPoint,

                this.EndPoint,

                this.TopRightPoint,

            };

        }

        /// <summary>