BCGControlBar Pro for MFC
UINT BCGM_RESETCONTEXTMENU

The BCGM_RESETCONTEXTMENU is sent to the main frame window, when the user resets the context menu during customization.

Parameters
wParamcontains the context menu resource ID.
lParampoints to a CBCGPPopupMenu, which is the current context menu.
Returns
the return value is ignored.