I can only get one Guid for the column through ACAPI_Element_GetElemList.With m_model->GetElementCount(), I find that the column consists of two elements, and then use GetElemGuid() to find that each of them has a different Guid.I am currently using ...

My ultimate goal is to get the model information for columns, such as Polygon, Vertex. These cannot be obtained directly from the Guid.

I find that one element id in the column is GUID, what is the relationship between the other element id and Guid?

Thank you, I will try it.

Thank you, I will try it, but now there is another problem. When adding a column in the scene, I will get two element, I don't know how to get ID separately. ModelerAPI::Model* m_model; Int32 nElements = m_model->GetElementCount();