Re: Python error under Cygwin - threading module

[Jason Tishler <jason at tishler dot net>]

On Fri, Jan 30, 2004 at 05:02:25AM -0800, Artur de Sousa Rocha wrote:
> Sometimes when I launch my script under Cygwin, I get strange error
> messages like:
> 
>       2 [win] python 1912 Winmain: Cannot register window class
> 
> Sometimes all of the threads run OK, otherwise after the "correct"
> ones finish the console stops responding anyway. No problems directly
> under Windows, and /lib/python2.3/test/test_threading.py works fine
> too. What is wrong?

I don't know, but I have some more (albeit not much more) information to
contribute.  If I patch Cygwin with the attached, then I get the
following:

    8 [win] python 2144 Winmain: Cannot register window class, Win32 error 1410

We also have the following:

    $ fgrep 1410 /usr/include/w32api/winerror.h 
    #define ERROR_CLASS_ALREADY_EXISTS 1410L

<WAG>
So, it seems that Cygwin is calling RegisterClass() with the same
WNDCLASS more than once.
</WAG>

Does the above ring any bells?

Thanks,
Jason

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