Code

    public class PelionFlowChart : MindFusion.Diagramming.WinForms.FlowChart
    {
        PointF _mousePosition;

        public new event DragEventHandler DragDrop;
        public new event DragEventHandler DragOver;
        public new event MouseEventHandler MouseMove;
        public new event EventHandler MouseLeave;

        public PelionFlowChart()
        {

            base.MouseMove += new MouseEventHandler(PelionFlowChart_MouseMove);
            base.MouseLeave += new EventHandler(PelionFlowChart_MouseLeave);
            base.DragOver += new DragEventHandler(PelionFlowChart_DragOver);
            base.DragDrop += new DragEventHandler(PelionFlowChart_DragDrop);
        }

        void PelionFlowChart_DragDrop(object sender, DragEventArgs e)
        {
            Point pScreen = new Point(e.X, e.Y);
            _mousePosition = PointToClient(pScreen);

            //bubble bubble
            if (this.DragDrop != null)
                DragDrop(sender, e);
        }

        void PelionFlowChart_DragOver(object sender, DragEventArgs e)
        {
            Point pScreen = new Point(e.X, e.Y);
            _mousePosition = PointToClient(pScreen);

            //bubble bubble
            if (this.DragOver != null)
                DragOver(sender, e);
        }

        void PelionFlowChart_MouseLeave(object sender, EventArgs e)
        {
            _mousePosition = new PointF(-1f, -1f);

            //bubble bubble
            if (this.MouseLeave != null)
                MouseLeave(sender, e);
        }

        void PelionFlowChart_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            _mousePosition = new PointF(e.X, e.Y);

            //bubble bubble
            if (this.MouseMove != null)
                MouseMove(sender, e);
        }

        #region Properties

        public PointF MousePositionOnChart { get { return ClientToDoc(new Point((int)_mousePosition.X, (int)_mousePosition.Y)); } }

        public ChartObject ObjectAtMousePosition { get { return GetObjectAt(MousePositionOnChart, false); } }

        #endregion
    }