My blog has moved to a new home. Please go to http://blog.sdruskat.net for the Brand New Code on the Block! And – like they said in the nineties – “don’t forget to update your bookmarks”. Link to this post on the new site: http://wp.me/p3klLL-1t.
I had implemented connection creation, following vainolo’s post about connections, but in my editor, the added connection figures never showed up, although the respective model objects had been instantiated (I’ve checked!). It was only after I had saved the graph, and re-opened the editor that the connection figures became visible. The respective code bits looked like this: