On Sun, Nov 16, 2003 at 09:15:37PM -0800, Chris Muller wrote:
> 
> Can background processes update morph trees?  While adding 100 morphs to a list
> on the screen (and setScrollDeltas of its ScrollPane) using a background
> process I sometimes get an image crash.
> 
> This makes sense if the work for background process is conflicting with the UI
> process, but I couldn't tell whether there is a safe way to do it.
> 
> Is there?

WorldState addDeferredUIMessage: ["do some UI stuff"]