How to: Implement Custom Hot-Tracking and Selection

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This example demonstrates how to implement custom hot-tracking and selection of the chart's elements at runtime.

NOTE

To enable runtime hot-tracking and selection, the ChartControl.RuntimeSelection property should be set to true.

If you want to change the default hot-tracking and selection, you should handle the ChartControl.ObjectHotTracked and ChartControl.ObjectSelected events, implement your custom hot-tracking and selection approaches and set the Cancel property to true.

For example, the code below illustrates how to disable selection and hot-tracking of a chart's diagram.

using DevExpress.XtraCharts;
// ...

private void chartControl1_ObjectHotTracked(object sender, HotTrackEventArgs e) {
   // Prevent the chart's diagram from being hot-tracked.
   if (e.Object is Diagram) 
      e.Cancel = true;
}

private void chartControl1_ObjectSelected(object sender, HotTrackEventArgs e) {
   // Prevent the chart's Diagram from being selected.
   if (e.Object is Diagram) 
      e.Cancel = true;
}
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