BCGControlBar Pro for MFC
void CBCGPChartVisualObject::SetDataPointFormat ( const BCGPChartFormatSeries dataPointStyle,
int  nDataPointIndex,
int  nSeriesIndex = 0 

Applies a custom style (format) to a data point.

Call this method to set a custom format for the specified data point. If the data point has not been formatted, a new underlined BCGPChartFormatSeries object is allocated and dataPointStyle is copied into it. Otherwise dataPointStyle overrides the current formatting options.

dataPointStyleA reference to formatting options to set.
nDataPointIndexSpecifies data point index.
nSeriesIndexSpecifies series index.