DEV Chart控件鼠标选中某条曲线

 1   this.chart.objectselected += new devexpress.xtracharts.hottrackeventhandler(this.chart_objectselected);
 2             this.chart.objecthottracked += new devexpress.xtracharts.hottrackeventhandler(this.chart_objecthottracked);
 3             chart.selectionmode = elementselectionmode.single;
 4             //chart.seriesselectionmode = seriesselectionmode.point;
 5 
 6  public series seriesselected = null;
 7         public seriespoint pointselected = null;
 8         public object selectedanotherobject = null;
 9         bool seriesselection = true;
10 
11         protected virtual bool allowselectanotherobject(object obj)
12         {
13             return false;
14         }
15         private void chart_objectselected(object sender, hottrackeventargs e)
16         {
17             if (e.object is series)
18             {
19                 e.cancel = !seriesselection;
20                 if (seriesselection) 
21                 {
22                     this.seriesselected = (series)e.object;
23                     this.pointselected = e.additionalobject as seriespoint;
24                 }
25             }
26             else
27             {
28                 if (allowselectanotherobject(e.object))
29                 {
30                     this.selectedanotherobject = e.object;
31                     e.cancel = false;
32                 }
33                 else
34                 {
35                     this.selectedanotherobject = null;
36                     e.cancel = true;
37                     chart.clearselection(false);
38                 }
39                 if (seriesselection)
40                 {
41                     this.seriesselected = null;
42                     this.pointselected = null;
43                 }
44             }
45         }
46 
47         private void chart_objecthottracked(object sender, hottrackeventargs e)
48         {
49             if (e.object is series)
50                 e.cancel = !seriesselection;
51             else
52                 e.cancel = !allowselectanotherobject(e.object);
53         }