I'm not sure how many people out there are doing multi-threading and Tk, but I just wanted to post a warning after spending a few months trying to track down a nasty (and very rare) crashing bug in one of my programs. I wish I had been more skeptical from the start. :)
I know that Tkinter isn't thread safe - so only use one thread to touch any Tkinter objects or their properties. However, I didn't think twice about creating an ImageTk.PhotoImage(of_my_image) in a secondary thread, and passing it to the GUI thread for display. For some reason, doing this works in 99.99% of the time, but occasionally crashes with an access violation error, pointing to the Tk DLL. So - until Tk is thread-safe (I'm not holding my breath, it wouldn't be a trivial task), just use the same thread that creates the Tk widgets to convert your images to PhotoImages. Kevin. _______________________________________________ Image-SIG maillist - [email protected] http://mail.python.org/mailman/listinfo/image-sig
