Thanks, guys.
I didn't end up using the tool, but I'm glad to know it exists. The problem turned out to be that I was doing all my work on the same thread as GTK, thereby blocking the run loop for the GUI. I fixed it by starting the work that the progress bar referenced on a separate thread and then using Invoke to force updates to the progress bar. What I eventually ended up doing was basically the advice advocated by the Responsive Applications document at http://www.mono-project.com/Responsive_Applications Thank you again. Your insights that the problem involved the way that GTK relates to threads led me to the correct solution. Johnnie Odom Network Services School District of Escambia County
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