We are generating realitively complicated diagrams that seem to be best automatically layed out by the anneal layout.

This layout operation, using just the default iterations/stages, can takes as long as several minutes on some machines.

We have been able to monitor progress by opening another dialog on a seperate thread to handle progress callbacks, however the main app goes to the wpf all-black screen/unresponsive.

Is there any way to monitor progress on the foreground/main window and actually offload the Arrange logic to another thread?  I was considering creating another instance of the whole diagram in another hidden window on a sepeareate thread and using the xml serialziation to send/bring back the diagram.