Ok thanks.
At the moment even the most recent version of wxPython Classic (3.0.2.0)
does not assert. Maybe one day Classic will do too...
r
Il giorno giovedì 20 luglio 2017 02:17:21 UTC+2, Robin Dunn ha scritto:
>
> [email protected] <javascript:> wrote:
>
> Hello,
> I've just found out that this will trigger an assert in Phoenix, when
> destroying the window:
>
> class MyEvtHandler(wx.EvtHandler):
> def __init__(self):
> wx.EvtHandler.__init__(self)
> self.Bind(wx.EVT_BUTTON, self.on_clic)
>
> def on_clic(self, evt):
> print("hello!")
> evt.Skip()
>
> class MainFrame(wx.Frame):
> def __init__(self, *a, **k):
> wx.Frame.__init__(self, *a, **k)
> button = wx.Button(self)
> button.PushEventHandler(MyEvtHandler())
>
> Now when you close the window you get an AssertionError. Apparently, we
> hit this assert in wxWidgets
> <https://github.com/wxWidgets/wxWidgets/blob/master/src/common/wincmn.cpp#L473>,
> checking that "Any additional event handlers should be popped before the
> window is deleted".
> Which is fine, except that I can't remember wxPython Classic ever
> complaining about this. Maybe the old machinery did a better job at
> cleaning up? Or I always been lucky and never experienced a crash because
> of an orphan handler?
>
>
> Probably just lucky. The assert wasn't there until sometime in the 2.9
> release series, IIRC. I've helped fix issues related to it in projects
> using wxPython Classic 3.0.x so I know there wasn't anything hiding or
> protecting you from the assert in Classic. (Unless perhaps you were using a
> build that had assertions turned off.)
>
> --
> Robin Dunn
> Software Craftsman
> http://wxPython.org
>
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