[wxPython-users] Re: How to do cleanup when system shutdown closes the app?

[roee88 shlomo]

I think you should also use
frame.Bind(wx.EVT_CLOSE, self.Query)
I always use all hust in case: EVT_CLOSE, EVT_QUERY_END_SESSION,
EVT_END_SESSION.

As a note: you can't set wx.App as a wx.MessageDialog parent.
you should change it to dlg =3D wx.MessageDialog(self.frame, 'OK to Quit?',
...
(of course self.frame =3D frame).


On 7/4/06, Avery.Andrews at anu.edu.au <Avery.Andrews at anu.edu.au> wrote:
>
>
> This thread has been in abeyance for a bit, so I'll review and rephrase.
> I have an app which I want to save its data when the system shuts down,
> as well as when the app itself is explicitly shut down.  It seems like
> processing the EVT_QUERY_END_SESSION ought to be the right thing to do,
> but, on the Windows platform, using Python 2.4.2 and Ansi wxpython 2.6.3.2
> (and various prior versions), this code doesn't produce any dialog window
> on system shutdown:
>
> class RunnerApp(wx.App):
>    def OnInit(self):
>        frame =3D RunnerFrame(None, "TreeRunner")
>        self.SetTopWindow(frame)
>        frame.Show(True)
>        self.Bind(wx.EVT_QUERY_END_SESSION, self.Query)
>        return True
>
>    def Query(self, event):
>        dlg =3D wx.MessageDialog(self, 'OK to Quit?',
>                               'A Message Box',
>                                wx.YES_NO
>                               )
>        answer =3D  dlg.ShowModal()
>        dlg.Destroy()
>        if answer!=3Dwx.ID_YES:
>            return 1
>        return 0
>
> if __name__ =3D=3D '__main__':
>
>    app =3D RunnerApp(redirect=3D0)
>    app.MainLoop()
>
> So is it possible that the EVT_QUERY_END_SESSION msg is simply not being
> processed in the Windows version of wxpython?  Or an I making some mistake
> in using it.
>
> - Avery Andrews
>
>
>
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