[pygtk] Insisting with the progress bar

[Aaron Optimizer Digulla]

Quoting Javi Roman <javi@esware.com>:

> I need an explanation the operation of the progress bar. I have the
> following program and with himself not to produce the
> wished effect. 

Your program must also update the display. You must add

    while events_pending():
        mainiteration (FALSE)

because updating/changing any widget produces only events. Nothing is
rendered until these events are processed.

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