CreateProcess / redirect output

[Achim Domma]

Hi,

I try to start a process on windows using win32process.Cr eateProcess and
want to to redirect the output. I set the STARTF_USESTDHA NDLES flag in the
STARTUPINFO structure. But I can not figure out, how to get the pipes
working. My app either deadlocks or displays the error messag:

....
print win32file.ReadF ile(readStdOut, 10)
pywintypes.erro r: (109, 'ReadFile', 'The pipe has been ended.')

I think I'm not the only one which needs to get the output of an external
process on windows. Is there a simpler solutions or has somebody a working
example to share?

regards,
Achim

[Richie Hindle]

[Achim]

I try to start a process on windows using win32process.Cr eateProcess [...]
I think I'm not the only one which needs to get the output of an external
process on windows.

Unless you have a specific reason for using CreateProcess, you can use
os.popen*() - see http://www.python.org/doc/current/li...ewstreams.html

If you really do need to use CreateProcess, this might help:
http://msdn.microsoft.com/library/de...and_output.asp

--
Richie Hindle
ri****@entrian. com

[Achim Domma]

"Richie Hindle" <ri****@entrian .com> wrote in message
news:ma******** *************** **************@ python.org...

Unless you have a specific reason for using CreateProcess, you can use
os.popen*() - see http://www.python.org/doc/current/li...ewstreams.html
The code is part of a COM object which is used in an ASP page. Using popen I
get the following error:

[Errno 5] Access is denied: 'C:\\WINDOWS\\s ystem32\\cmd.ex e /c
path_to\\Extrac tingDummy.exe "path_to\\some_ dummy.doc"'

The IUSER has the required rights on all these files. Don't know how to
solve that.
If you really do need to use CreateProcess, this might help:

http://msdn.microsoft.com/library/de...us/dllproc/bas
e/creating_a_chil d_process_with_ redirected_inpu t_and_output.as p

That looks like the info I was looking for. Thanks!

Achim