stderr/stdout/stdin [was lua system interaction on win]

[Martin Spernau <martin@...>]

Okay, this has gottem me really far along my way.
Now I have some further questions concerning 'piping'

The sample code 'opens' the STDOUT of the external process as _INPUT
a) how would I (also) connect STDERR as a filehandle to read from?
b) how do I write to the STDIN of the above external process?
	h=readfrom("|command -arg")
	writeto(h) -- does this connect to STDIN of above pipe?

What I'm basically after is controlling another commandline tool 
(ispell, curl etc) from within a lua-script. It would also be important 
to catch STDERR, of course.

Thanks for all the help already,

-Martin

David Burgess wrote:
> On VC6, Lua 4.0.1
> from the project menu
> Goto - "Project/Settings"
> Tab - "C/C++"
> Select "All configurations"
> Edit field - "Preprocessor definitions"
>
> and paste at the end of the existing string
> (which should already have something like "WIN32,_CONSOLE,_MBCS")
> POPEN,popen=_popen,pclose=_pclose
>
> > David, could you please elaborate on how you did this? I'm using VC6,
>
> where
>
> > would I change the code?
> >
> > Thanks again, Martin