MARKUS

        public override void Copy(CommentUserInfo lhs)

        {

            if (lhs is SymControlN symControlN)

            {

                this.PointSet = symControlN.PointSet.ConvertAll(x => new Point(x.X, x.Y));

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

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

                this.CommentAngle = symControlN.CommentAngle;

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

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

                this.Opacity = symControlN.Opacity;

                this.PathXathData = symControlN.PathXathData;

                this.Memo = symControlN.Memo;

            }

        }

        public override CommentUserInfo Clone()

        {

            var clone = new SymControlN();

            clone.Copy(this);

            return clone;

        }