Re: [matplotlib-devel] Patch for Qt4 backend for IPython GUI

[Brian G. <ell...@gm...>]

Eric,

On Fri, Aug 27, 2010 at 12:15 AM, Eric Firing <ef...@ha...> wrote:
> On 08/26/2010 05:13 PM, Brian Granger wrote:
>> Hi,
>>
>> We are in the process of getting our new Qt IPython GUI working with
>> matplotlib.  One problem we have found is that the matplotlib qt4
>> backend always creates a QApplication.  This is problematic in
>> situations where another part of an application has already created a
>> QApplication.  The fix is to have matplotlib first see if a
>> QApplication already exists and then use that one.  The attached patch
>> implements this fix.  If needed, Fernando can help test this, but I
>> think the change is minor enough that it should be good to go.
>
> I committed it.

Thanks!  I am going to post another msg soon about our thoughts on a
new and consistent way of detecting existing apps and running event
loops.

> I suspect the most recent changes to ipython may require changes to
> show, but they can wait until things settle down a bit.

Very likely, we will be in touch.

Brian

> Eric
>
>>
>> Cheers,
>>
>> Brian
>
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