virtual BOOL PreTranslateMessage( MSG* pMsg );
pMsg
A pointer to a MSG structure containing the message to process.
Override this function to filter window messages before they are dispatched to the Windows functions TranslateMessage and DispatchMessage. The default implementation performs access-key translation, so you must call PreTranslateMessage in your overridden version.
TRUE if the message was fully processed in PreTranslateMessage and should not be passed to the Windows functions TranslateMessage and DispatchMessage. FALSE if the message should be processed in the normal way.