PrintGDMLAuxInfo.cc

void print_aux(const G4GDMLAuxListType* auxInfoList, G4String prepend="|")
{  
  for(std::vector<G4GDMLAuxStructType>::const_iterator iaux = auxInfoList->begin();
      iaux != auxInfoList->end(); iaux++ )
    {
      G4String str=iaux->type;
      G4String val=iaux->value;
      G4String unit=iaux->unit;
      
      G4cout << prepend << str << " : " << val  << " " << unit << G4endl;

      if (iaux->auxList) print_aux(iaux->auxList, prepend + "|");
    }
  return;
}

void printAuxInfo() {
   const G4LogicalVolumeStore* lvs = G4LogicalVolumeStore::GetInstance();
   std::vector<G4LogicalVolume*>::const_iterator lvciter;
   for( lvciter = lvs->begin(); lvciter != lvs->end(); lvciter++ )
   {
     G4GDMLAuxListType auxInfo = parser.GetVolumeAuxiliaryInformation(*lvciter);

     if (auxInfo.size()>0)
       G4cout << "Auxiliary Information is found for Logical Volume :  "
              << (*lvciter)->GetName() << G4endl;
     
     print_aux(&auxInfo);
   }
}