BCGControlBar Pro for MFC
void CBCGPChartSeries::SetDataLabelDrawBorder ( BOOL  bDraw,
int  nDataPointIndex = -1 
)

Sets "draw border" option for the data labels.

Parameters
bDrawTRUE- show a data label border, FALSE - hide a data label border.
nDataPointIndexSpecifies a data point index. Use -1 to set the option for a series.