This topic is included for completeness. For more detail see the source code located in the VC\atlmfc\src\mfc folder of your Visual Studio installation.
virtual void OnDrawSeparator(
CDC* pDC,
CBasePane* pBar,
CRect rect,
BOOL bIsHoriz
);
Parameters
[in] pDC
[in] pBar
[in] rect
[in] bIsHoriz
Requirements
Header: afxvisualmanagerwindows.h