40     virtual gint AddObserver(TMSDTMFObserver& obsrvr, gpointer user_data);

    40     virtual gint AddObserver(TMSDTMFObserver& obsrvr, gpointer user_data);

    41     virtual gint RemoveObserver(TMSDTMFObserver& obsrvr);

    41     virtual gint RemoveObserver(TMSDTMFObserver& obsrvr);

    42     virtual gint Start();

    42     virtual gint Start();

    43     virtual gint Stop();

    43     virtual gint Stop();

    44     virtual gint SetTone(GString* string);

    44     virtual gint SetTone(GString* string);

    46 

    46 

    47     void SetParent(TMSDTMF*& parent);

    47     void SetParent(TMSDTMF*& parent);

    48 

    48 

    49 private:

    49 private:

    50     TMSDTMFBodyImpl();

    50     TMSDTMFBodyImpl();