[PyQt] Crash in KMainWindow.saveProperties() [small sample C++/Python code provided]

[Adeodato Simó]

* Jim Bublitz [Tue, 28 Aug 2007 12:56:19 -0700]:

> On Tuesday 28 August 2007 11:10, Adeodato Simó wrote:
> > Hello.

> > I'm getting the same backtrace as mentioned in [1]. Please find attached
> > a minimal C++ example application that successfully saves its state, and
> > a Python equivalent that crashes when logging out of KDE.

> > Note that the crash is not related to using config, just providing an
> > empty saveProperties() crahses as well.

> It doesn't crash here (just running the simple app you attached), so I can't 
> actually test a solution,

Oh, and what could be different? Can you test with xsm to see if it
helps? (I guess you're familiar with xsm, but just in case: "echo xterm >~/.xsmstartup;
xsm; ./saveProperties.py from that xterm; select shutdown -> with
checkpoint -> "foo").

Do you think there's a chance a newer version of PyKDE could help?

> but Simon Edwards ran into a similar problem with 
> PyKDE4 and fixed it by globally declaring 'application' (from your example):

> application = None

> and then inside main(), adding:

> global application

> I think that should ensure that KApplication is the last object destroyed.

I'm afraid this didn't help.

> The other possibility is to construct the main window and KApplication in 
> global space, after the "if __name__ == __main__" test, instead of putting 
> them inside a function or class method. That seems to have fewer problems 
> with exit crashes (but other things can cause them as well).

Nor this.

In any case, thanks for your help.

-- 
Adeodato Simó                                     dato at net.com.org.es
Debian Developer                                  adeodato at debian.org
 
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