AcDbBlockReference和字段

Acad::ErrorStatus BlockWorker::CopyFields(AcDbAttributeDefinition *pAttdef, AcDbAttribute *pAtt  )
{
  Acad::ErrorStatus es = Acad::eOk;
  AcDbObjectId fieldId;
  AcDbDictionaryPointer pDict(pAttdef->getFieldDictionary(), AcDb::kForRead);
  if(pDict.openStatus() == Acad::eOk)
  {
    std::auto_ptr pDictIter(pDict->newIterator());
    for(;!pDictIter->done();pDictIter->next())
    {
      AcDbObjectPointer pField(pDictIter->objectId(),AcDb::kForWrite);
      if( (es = pField.openStatus()) != Acad::eOk)
      {
        acutPrintf(_T("\nFailed to open Field :\nLine %ld [%s] In function %s "),
          __LINE__, acadErrorStatusText(es),_T(__FUNCTION__));
        continue;
      }
      AcDbField *pNewField = new AcDbField(
        pField->getFieldCode(AcDbField::kAddMarkers),pField->isTextField());
      if(pField == NULL)
      {
        es = Acad::eNullObjectPointer;
        acutPrintf(_T("\nFailed to create Field  :\nLine %ld [%s] In function %s "),
          __LINE__, acadErrorStatusText(es),_T(__FUNCTION__));
        continue;
      }
      if( (es = pNewField->postInDatabase(m_pDb)) != Acad::eOk)
      {
        acutPrintf(_T("\nFailed to add Field to Database :\nLine %ld [%s] In function %s "),
          __LINE__, acadErrorStatusText(es),_T(__FUNCTION__));
        delete pNewField;
        continue;
      }
      if( (es = pAtt->setField(pDictIter->name(),pNewField,fieldId)) != Acad::eOk)
      {
        acutPrintf(_T("\nFailed to set Field :\nLine %ld [%s] In function %s "),
          __LINE__, acadErrorStatusText(es),_T(__FUNCTION__));
        continue;
      }
      if( (es = pNewField->evaluate(0,0))  != Acad::eOk)
      {
        acutPrintf(_T("\nFailed to evaluate Field :\nLine %ld [%s] In function %s "),
          __LINE__, acadErrorStatusText(es),_T(__FUNCTION__));
      }
      if( (es = pNewField->close()) != Acad::eOk)
      {
        acutPrintf(_T("\nFailed to close Field :\nLine %ld [%s] In function %s "),
          __LINE__, acadErrorStatusText(es),_T(__FUNCTION__));
      }
    }
  }
  return es;
}