BCGControlBar Pro for MFC
void CBCGPPopupWindow::SetStemLocation ( BCGPPopupWindowStemLocation  location,
int  nSize = -1,
int  nStemGap = 0 
)

Sets a stem location.

Parameters
locationThe stem location.
nSizeThe stem size, in pixels. Pass (-1) to set a default size
nStemGapThe gap between the stem and destination point.