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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 }
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