Chart (Business Graphic) – CDATA Event

This event is reported when you release the mouse over a data point such as a marker, a bar or a pie wedge. The event message is reported as a 4-element vector giving:

1. Chart id – a unique name for the chart, which may be given by the application using ch.Name when you draw the chart.
2. Series id – a name for the data series, which will be null unless supplied by the application using ch.Series.
3. Row,Column – the row,column index in the data matrix of the data point. This is always reported in ŒIO=1. Vectors are treated as 1-column matrices, and always report the column dimension as 1.

Note that if you want to use this event but draw with lines only, you can use the ‘invisible’ marker style to get the hotspots marked for you.