BCGControlBar Pro for MFC
BOOL CBCGPPopupMenu::HideRarelyUsedCommands ( ) const

Returns nonzero if the popup menu is able to hide the rarely used commands.

Returns
Nonzero if the popup menu object can hide the rarely used commands; otherwise 0.

Call this function to determine whether the popup menu object can hide the rarely used commands (e.g. it has a parent button and its parent window is derived from the CBCGPMenuBar).