type TTChartOnGetLegendText = procedure(ASender: TObject; LegendStyle, ValueIndex: Integer; Var LegendText: WideString) of object;
Type Library
TeeChartx
Description
You can use this event to override the text strings that TChartLegend paints.
ILegend has two different modes (or LegendStyles):
lsSeries Legend contains Series Names or Titles.
lsValues Legend contains a Series values or labels.
If the LegendStyle is lsAuto, TChartLegend paints in lsSeries mode if more than one Active Series exists in the Chart.