How to retrieve a list of the languages supported by the phone.

    CPtiEngine* eng = CPtiEngine::NewL( ETrue );
 CleanupStack::PushL( eng );
 if ( eng->NumberOfLanguages() )
     {
     RArray<TInt> languages;
     CleanupClosePushL( languages );
     eng->GetAvailableLanguagesL( languages );
     ........
     CleanupStack::PopAndDestroy( &languages );
     }
 CleanupStack::Pop (eng);