get_ReferencingDocuments API is not working as expected for Multiple Model State

[Harshil.JAINS8RVT]

Hello All,

I have been working on Inventor 2023 and trying to access the Referencing Document of a Part using get_ReferencingDocuments API.

I have created below Structure in CAD

Drawing1.idw               Drawing2.idw

          |_Part1.ipt                      |_Part1.ipt

Now all the above documents are opened in Inventor and keep Part1.ipt active in CAD Session.

I have written below code which is working fine in case of Single Model State but not working for multiple model state.

a) In case of Single Model State get_ReferencingDocuments is returning list of opened drawing file.

b) But in case of Multiple Model State get_ReferencingDocuments is returning list of part files instead of drawing file.

Could you please suggest me how to access ReferencingDocuments of Part in case of Multiple Model State in Part or It is a bug from Inventor side.

Code Smaple :-

DocumentsEnumeratorPtr ReferencingDocs;

if (SUCCEEDED(hr) && !!pDocument)

hr = pDocument->get_ReferencingDocuments(&ReferencingDocs); //Getting incorrect list in case multiple Model State in Part

long lReferencingDocsCount;

if (SUCCEEDED(hr) && !!ReferencingDocs)

hr = ReferencingDocs->get_Count(&lReferencingDocsCount);

if (SUCCEEDED(hr) && ReferencingDocs)

{

for (int i = 1; i <= lReferencingDocsCount; i++)

{

DocumentPtr DocPtr = ReferencingDocs->GetItem(i);

BSTR bstrFullFileName;

if (SUCCEEDED(hr) && DocPtr)

hr = DocPtr->get_FullFileName(&bstrFullFileName);

}

}

Thanks

[YuhanZhang]

The situation should be that you are querying the referencing documents for a model state factory document instead of model state member document. When you have an assembly document, and it has several model states, and place one model state to drawing document, it has below reference structure:

Assembly1.iam 
           |____Assembly1.iam<Model State1>
                                                |____Assembly1.idw

The Assembly1.iam is a model state factory document, check ComponentDefinition.IsModelStateFactory, the Assembly1.iam<Model State1> is a model state member document, check PartComponentDefinition.IsModelStateMember). So the model state factory document will reference to the model state member document, and then the model state member document references to the drawing document.  So in your code you should firstly check your document is a model state factory or member document.

Thanks,

Rocky