Adding a property definition to a property set definition using OMF

By Katsuaki Takamizawa

Issue:

How to add a property definition to a property set definition using OMF?

Solution:

You can access to a property set definition stored in the dictionary “AEC_PROPERTY_SET_DEFS” under AutoCAD Named Object Dictionary) and add a property definition. The following code shows how to do it. This code finds property sets attached to a door and finds definitions. Please set a least one door property set to the door before testing the code. The code adds a property definition “Area” and then sets the value of 15.98.

  // get working database
  AcDbDatabase *pCurDb = acdbHostApplicationServices()->workingDatabase();
  if(pCurDb == NULL)
    return;

  // select a door
  AecUiPrEntity promptEnt(_T(“Select a door”), NULL);
  promptEnt.addAllowedClass(AecDbDoor::desc());
  if(promptEnt.go() != AecUiPr::kOk)
  {
    acutPrintf(_T(“nAborting command…”));
    return;
  }

  // open the door for read
  Acad::ErrorStatus es;
  AecDbDoor *pEnt;
  es = AecDbDoor::open(pEnt, promptEnt.objectId(), AcDb::kForRead);
  if(es != Acad::eOk)
  {
    acutPrintf(_T(“nCan not open the Door entity.”));
    return;
  }

  // get property sets from extension dictionary of the selected door
  AcDbObjectIdArray propSetIds;
  es = AecDbPropertySet::getPropertySets( (AcDbObject*) pEnt, propSetIds);
  if(es != Acad::eOk)
  {
    acutPrintf(_T(“nThere are no property sets in this AEC entity.”));
    pEnt->close();
    return;
  }
  pEnt->close();

  // iterate through all the property sets
  for(int iPropSet=0; iPropSet < propSetIds.length(); iPropSet++) {
    // get property set object
    AecDbPropertySet *propSet = NULL;
    AecDbPropertySet::open( propSet, propSetIds[iPropSet], AcDb::kForRead);

    // Add a propertydef to propertyset def
    // Create property
    AecPropertyDef* pdefArea = new AecPropertyDef;
    pdefArea->subSetDatabaseDefaults ( pCurDb) ;

    es = pdefArea->setName(_T(“Area”));
    es = pdefArea->setAutomatic (false);
    es = pdefArea->setDataType (AecPropertyDef::kReal );

    // Add to Property Set
    es = propSetDef->addPropertyDef(pdefArea);

    // Open again to make modifications
    es = AecDbPropertySet::open(propSet, propSetIds[iPropSet], AcDb::kForWrite);
    es = propSet->propertyNameToId(_T(“Area”), propId);
    es = propSet->setAt(propId, 15.98);

    propSet->close();
  }