BCGControlBar Pro for MFC
void CBCGPChartBoxPlotSeries::SetCustomSizePercent ( int  nSize,
BOOL  bSet = TRUE 

Sets custom box size.

Call this method to customize box size. Usually the size is calculated automatically and depends on the number of series and size of diagram area/major unit, but using this method you can override the automatic calculation.

nSizeSpecifies custom box size in percents from the major unit size.
bSetTRUE - enable custom size calculation, FALSE - disable custom size calculation.