Thanks to both of you for catching this.

Mike

-----Original Message-----
>From: Victor Lazzarini 
>Sent: May 11, 2006 4:10 PM
>To: csound-devel@lists.sourceforge.net
>Subject: Re: [Cs-dev] CsoundPython.cpp
>
>It looks like destroying the old instance just before the
>function returns is the fix, as Istvan said. It seems to be
>the
>right find to do and is working here.
>
>Victor
>
>>
>> The reason is we want the csound instance created in the
>> csnd Python extension module to replace the one created by
>> csound5gui. If you can find a way to plug the csound
>> instance created in csound5gui into Python so it gets its
>> proper Python wrapper let me know.
>>
>> Regards,
>> Mike
>>
>> -----Original Message-----
>> >From: Victor Lazzarini 
>> >Sent: May 11, 2006 3:11 PM
>> >To: csound-devel@lists.sourceforge.net
>> >Subject: [Cs-dev] CsoundPython.cpp
>> >
>> >Looking again at CsoundPython.cpp, it seems right that
>> there >was a memory access exception with csound5GUI. This
>> bit of >code, which is responsible for it, is suspect:
>> >
>> > csoundDestroy(csound);
>> > csound = cppSound->getCsound();
>> > csoundSetHostData(csound, csoundGetHostData(*csound_));
>> > csoundSetMessageCallback(csound,
>> >
>> >&CsoundGUIConsole::messageCallback_Thread);
>> >
>> >It appears that by destroy 'csound' we destroy *csound_,
>> >which then
>> >causes the csoundSet...() API calls to fail.
>> >
>> >I don't really understand the code and the reasons why
>> you >have to
>> >create a new instance and destroy the old one. It appears
>> >that is
>> >because you want the derived object rather than the base,
>> >which is
>> >fine, but it is crashing here.
>> >
>> >If we on the other hand do not destroy the old instance,
>> >then it's
>> >OK. There is no crash. I don't really want to go
>> modifying >code that
>> >I don't fully understand, so I'll leave it up to the
>> authors >to fix it,
>> >now that we know where the problem lies.
>> >
>> >Best regards,
>> >
>> >Victor
>> >
>> >
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>>
>>
>>
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