BCGControlBar Pro for MFC
static BOOL CBCGPKeyboardManager::IsShowAllAccelerators ( )

Tells whether all accelerators, or one accelerator should be displayed for a command.

Nonzero if the list of all defined accelerators is displayed for a command; it's 0 if only one accelerator is displayed for a command.

You can enable or disable this feature using the ShowAllAccelerators() static function.