[Python-modules-team] Bug#758695: python-traitsui: Updated patch for wxPython 3.0

[Olly Betts]

Control: reopen -1

Dear maintainer,

Testing a patch for mayavi2 (which I'll send in shortly), I found
further changes are needed to python-traitsui.

With the attached patch to python-traitsui, mayavi2 seems to work well.

I've eschewed PushEventHandler() because it seems hard to ensure that
the event handler reliably gets popped before the window/control is
destroyed (and wx3.0's wxdebug assertions complain if it isn't popped).
Instead I'm using Bind(), which is the preferred way to set up event
handling dynamically since wx 2.9.0:

http://docs.wxwidgets.org/trunk/overview_events.html

Since this is essentially fixing a problem in my previous NMU, I'm
intending to upload this in the near future, but I felt it was polite
to give you a chance to comment on the patch.

Cheers,
    Olly
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