DEV Chart控件鼠标选中某条曲线

   this.Chart.ObjectSelected += new DevExpress.XtraCharts.HotTrackEventHandler(this.Chart_ObjectSelected);
             this.Chart.ObjectHotTracked += new DevExpress.XtraCharts.HotTrackEventHandler(this.Chart_ObjectHotTracked);
             Chart.SelectionMode = ElementSelectionMode.Single;
             //Chart.SeriesSelectionMode = SeriesSelectionMode.Point;

  public Series seriesSelected = null;
         public SeriesPoint pointSelected = null;
         public object selectedAnotherObject = null;
         bool SeriesSelection = true;

         protected virtual bool AllowSelectAnotherObject(object obj)
         {
             return false;
         }
         private void Chart_ObjectSelected(object sender, HotTrackEventArgs e)
         {
             if (e.Object is Series)
             {
                 e.Cancel = !SeriesSelection;
                 if (SeriesSelection)
                 {
                     this.seriesSelected = (Series)e.Object;
                     this.pointSelected = e.AdditionalObject as SeriesPoint;
                 }
             }
             else
             {
                 if (AllowSelectAnotherObject(e.Object))
                 {
                     this.selectedAnotherObject = e.Object;
                     e.Cancel = false;
                 }
                 else
                 {
                     this.selectedAnotherObject = null;
                     e.Cancel = true;
                     Chart.ClearSelection(false);
                 }
                 if (SeriesSelection)
                 {
                     this.seriesSelected = null;
                     this.pointSelected = null;
                 }
             }
         }

         private void Chart_ObjectHotTracked(object sender, HotTrackEventArgs e)
         {
             if (e.Object is Series)
                 e.Cancel = !SeriesSelection;
             else
                 e.Cancel = !AllowSelectAnotherObject(e.Object);
         }