Thanks for the reply John. Not quite the answer I was looking for
though.... ;) I tried your suggestion of returning True but it didn't solve
the problem. Oh well, not the end of the world. Being a die-hard KDE user,
I started trying to get things working with Qt. I got my animation working
but thus far haven't been able to catch key press events. My guess is that
I'm just missing something about how it's supposed to be done so I'll
probably figure it out.
Thanks again,
Mark
On Sun, Aug 2, 2009 at 9:17 AM, John Hunter <jdh2...@gmail.com> wrote:
> On Sun, Aug 2, 2009 at 8:08 AM, John Hunter<jdh2...@gmail.com> wrote:
>
> > Wriing a GUI neutal idle event handler is not easy -- I've spent some
> > time on it but crashed and burned on tk -- but my guess is that the
> > problem you are having in your code is that GTK expects you to return
> > True is you want the func to be called again. As soon as you return
> > False the event handler is terminated. You return nothing, which is
> > None, which is False. A simple "return True" may cure what ails you
> > vis-a-vis gtk. But pylab animation is not supported, so I suggest
> > that you code to your GUI of choice for animation until we get a
> > proper GUI neutral animation event API.
>
> I should phrase this last bit differently: I would like to support
> this, and spent a fair amount of time trying to get this working
> properly across backends. I think it *does* work on GTK and WX. I
> encountered some problems in tkagg: since tk does not have a native
> idle event loop that I could wrap, I tried to use python threading to
> implement it, and ran into problems with cross thread signal handling
> (including losing CTRL-C and some strange on-exit behavior) so
> commented out the code, and have not attempted qt or macosx. I think
> it would be great if we could abstract the idle handler and timeout
> handler across the GUIs so that mpl animation would be easier, but to
> date this has eluded me. So in the meantime, I would stick to the API
> of the GUI of your choice until we can get proper support for this as
> an mpl event.
>
> JDH
>
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