BCGControlBar Pro for MFC
BOOL BCGPGLOBAL_DATA::m_bUseAccessKeyAsAccessibilityKey

Specifies which type of accessibility key (FALSE - keyboard accelerator or TRUE - underlined character) will be returned by the get_accKeyboardShortcut method. By default, this flag is FALSE.

If this member to TRUE, the accessibility key will be the underlined character (for example, 's' for the "Save" command"). If this member to FALSE (by default), the accessibility key will be keyboard accelerator (for example, 'Ctrl+S' for the "Save" command".