The extension was contributed by Bart De Lathouwer . Also the application is not visible. Mr Nick Hodapp is also working on this subject and might release it in the future. So keep watching this section.
Lets start first to make the application visible.
To be able to do so we must override CreateNewDocument in CMultiDocTemplate. CreateNewDocument is called from OpenDocumentFile to create a new document. But the document already exists. CrateNewDocument should therefor be altered NOT to create a document. FinalConstruct will continue to create Frame and View.