How to create annotative objects?

Anonymous — Fri, 21 Aug 2009 00:49:16 GMT

What do I need to do to create a AcDbBlockReference that supports AcDbAnnotationScale? When I use the Acad Insert command to insert an annotative block it creates an extension dictionary that looks something like this:

{code}
AcDbBlockReference
Extentension Dictionary
"AcDbContextDataManager" Dictionary
"ACDB_ANNOTATIONSCALES" Dictionary
"ACDB_BLKREFOBJECTCONTEXTDATA_CLASS" Object
{code}

The sparse documentation that exists (and the sample project) make it seem like all you have to do is:

{code}
//-----------------------------------------------------------------------------
Acad::ErrorStatus
InsertBlock( AcDbObjectId blockRecordId,
AcDbObjectId ownerRecordId,
AcDbBlockReference*& pReference)
{
pReference = new AcDbBlockReference();
pReference->setBlockTableRecord(blockRecordId);
PsdbDbxObjectPointer pOwnerRecord;
pOwnerRecord.open(ownerRecordId, AcDb::kForWrite);
pOwnerRecord->appendAcDbEntity(pReference);
PsdbDbxObjectPointer pBlockRecord;
pBlockRecord.open(blockRecordId, AcDb::kForRead);
AcDbDatabase* pDatabase = pBlockRecord->database();
AcDbBlockTableRecordIterator* pIterator;
pBlockRecord->newIterator(pIterator);
for (pIterator->start(); !pIterator->done(); pIterator->step()) {
PsdbDbxObjectPointer pEntity;
pIterator->getEntity(pEntity, AcDb::kForRead);
AcDbAttributeDefinition* pAttDef
= AcDbAttributeDefinition::cast(pEntity.object());
if (pAttDef != NULL && !pAttDef->isConstant()) {
PsdbDbxObjectPointer pAttribute;
pAttribute.create();
pAttribute->setAttributeFromBlock(pAttDef, pReference->blockTransform());
AcDbObjectId attribuiteId;
pReference->appendAttribute(attribuiteId, pAttribute);
}
}
delete pIterator;
if (ObjectIsAnnotative(pBlockRecord)) {
SetAnnotative(pReference);
AcDbAnnotationScale* pAnnoScale = pDatabase->cannoscale();
AddContextToObject(pReference, *pAnnoScale);
delete pAnnoScale;
}
return Acad::eOk;
}

//-----------------------------------------------------------------------------
Acad::ErrorStatus
SetAnnotative( AcDbObject* pObject,
bool annotative)
{
AcDbAnnotativeObjectPE* pAnnoPE
= ACRX_PE_PTR(pObject, AcDbAnnotativeObjectPE);
if (pAnnoPE == NULL)
return Acad::eNullPtr;
return pAnnoPE->setAnnotative(pObject, annotative);
}

//-----------------------------------------------------------------------------
Acad::ErrorStatus
AddContextToObject( AcDbObject* pObject,
const AcDbObjectContext& context)
{
AcDbObjectContextInterface* pContextInterface
= ACRX_PE_PTR(pObject, AcDbObjectContextInterface);
if (pContextInterface == NULL)
return Acad::eNullPtr;
return pContextInterface->addContext(pObject, context);
}

//-----------------------------------------------------------------------------
bool
ObjectIsAnnotative(AcDbObject* pObject)
{
AcDbAnnotativeObjectPE* pAnnoPE
= ACRX_PE_PTR(pObject, AcDbAnnotativeObjectPE);
if (pAnnoPE == NULL)
return false;
return pAnnoPE->annotative(pObject);
}
{code}

I was hoping that AcDbAnnotativeObjectPE::setAnnotative() would create the required objects inside the reference's extension dictionary; but for some reason, AcDbAnnotativeObjectPE::setAnnotative() returns Acad::eInvalidInput. Am I just doing this all wrong?

Re: How to create annotative objects?

Anonymous — Fri, 21 Aug 2009 16:02:06 GMT

Okay, I got this working. It's not the call to AcDbAnnotativeObjectPE::setAnnotative() that adds the data to the object's extension dictionary, it's actually AcDbObjectContextInterface::addContext()... duh.. And after messing with it for a while I found out that AcDbAnnotativeObjectPE::setAnnotative() will return Acad::eInvalidInput if AcDbAnnotativeObjectPE::annotative(object) == true. So I modified my SetAnnotative function to do this:

{code}
//-----------------------------------------------------------------------------
Acad::ErrorStatus
SetAnnotative( AcDbObject* pObject,
bool annotative)
{
ASSERT(pObject != NULL);
AcDbAnnotativeObjectPE* pAnnoPE = ACRX_PE_PTR(pObject, AcDbAnnotativeObjectPE);
if (pAnnoPE == NULL)
return Acad::eNullPtr;
if (pAnnoPE->annotative(pObject) == annotative)
return Acad::eOk;
return pAnnoPE->setAnnotative(pObject, annotative);
}
{code}

topic Re: How to create annotative objects? in ObjectARX Forum

How to create annotative objects?

Re: How to create annotative objects?