try
  {
   CtiHlavniData();
  }
catch (Chyba e)
  {
   CtiNahradniData();
  }

nebo

if (!CtiHlavniData()) CtiNahradniData();

void A()
{
  class CatchForwardedException: public ForwardedExceptionHandler
  {
    public:
      virtual bool OnException(const IException *e)
      {
        ... delej neco s e;
        return CallNextExceptionHandler(e);
      }
  };
  
  CatchForwardedException hnd; //construktor ForwardedExceptionHandler instaluje handler do seznamu handleru
  if (B()==false) return ; //rizeny navrat, exception je resena v 
handleru
/* nebo 
  B();
  if (hnd.catched()) return;
*/
  ...
  ... 
  }
}

bool B()
{
  ForwardedException::Throw(new SomeException(...));
  return false; //neuspech.
}