// Step 1: Create the clone.
//
AsdkPoly *pClone = (AsdkPoly*)isA()->create();
if (pClone != NULL)
pClonedObject = pClone; // Set the return value.
else
return Acad::eOutOfMemory;
// Step 2: Append the clone to its new owner. In this
// example, the original object is derived from AcDbEntity,
// so the owner is expected to be an AcDbBlockTableRecord,
// unless an ownership relationship is set up with another
// object. In that case, it is important to establish a
// connection to that owner. This sample shows a generic
// method using setOwnerId().
//
AcDbBlockTableRecord *pBTR =
AcDbBlockTableRecord::cast(pOwner);
if (pBTR != NULL) {
pBTR->appendAcDbEntity(pClone);
} else {
if (isPrimary)
return Acad::eInvalidOwnerObject;
// Some form of this code is only necessary if
// anyone has set up an ownership for the object
// other than with an AcDbBlockTableRecord.
//
pOwner->database()->addAcDbObject(pClone);
pClone->setOwnerId(pOwner->objectId());
}
// Step 3: Now contents are copied to the clone. This is done
// using an AcDbDeepCloneFiler. This filer keeps a list of all
// AcDbHardOwnershipIds and AcDbSoftOwnershipIds contained in
// the object and its derived classes. This list is then used
// to know what additional, "owned" objects need to be cloned
// below.
//
AcDbDeepCloneFiler filer;
dwgOut(&filer);
// Step 4: Rewind the filer and read the data into the clone.
//
filer.seek(0L, AcDb::kSeekFromStart);
pClone->dwgIn(&filer);
// Step 5: This must be called for all newly created objects
// in deepClone(). It is turned off by endDeepClone()
// after it has translated the references to their
// new values.
//
pClone->setAcDbObjectIdsInFlux();
// Step 6: Add the new information to the ID map. We can use
// the ID pair started above.
//
idPair.setValue(pClonedObject->objectId());
idPair.setIsCloned(Adesk::kTrue);
idMap.assign(idPair);
// Step 7: Using the filer list created above, find and clone