I have a diagram with a context menu item to allow adding selected nodes to a subgraph. Everything works and looks perfect. I am using the TestSubGraph class from your demos. The problem is that when I collapse the graph it also looks correct, but when I expand it again, it loses the background color specified in the TestSubGraph class and the collapsed object which is an image stays even though it is expanded. Any thoughts.?
I can send you images of the problem if you like. Also, how do you listen for the expand/collapse event.