BCGControlBar Pro for MFC
virtual void CBCGPEditCtrl::OnCalcOutlineSymbol ( CDC *  pDC,
CPoint  ptCharOffset,
CBCGPOutlineBaseNode pHiddenText 

Called to recalculate the outline symbol.

OnCalcOutlineSymbol is called when the edit control needs to recalculate the bounding rectangle for the outline symbol. The "outline symbol" is an image, which is drawn as a replacement of collapsed text.

pDCA pointer to a device context.
ptCharOffsetThe offset in the editor window specifying the top-left corner of the outline symbol.
pHiddenTextA pointer to the collapsible node.