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Subject: Re: calling unzip32 from C program
References: <ciesel$60c$1 AT nsnmpen3-gest DOT nuria DOT telefonica-data DOT net> <2r0dd4F14ift1U1 AT uni-berlin DOT de>
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Date: Fri, 17 Sep 2004 17:25:02 GMT
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Hans-Bernhard Broeker wrote:
> Rafael García <rafael_no_spam_no_ AT geninfor DOT com> wrote:
> 
>> I put this in a C program:
> 
>> ret=system("unzip prueba.zip");
> 
>> then I write an "unzip.bat" with:
> 
>> unzip32 %1 %2 %3 %4 %5 %6
> 
>> At execution, unzip32 works OK but return value from system is 1.
>> When I execute unzip.bat from the console, errorlevel from unzip32
>> is 0 but when called from system in the C program, it returns 1.
> 
> If you ever want to look at return codes (called "ERRORLEVEL" only
> by MS command line interpreters...), don't go through a .bat file.
> Command.com has an unbelievably stupid feature: it won't tell you
> anything about return levels of batch files, or of the programs
> they executed.
> 
> For the case at hand, there's really nothing to be gained by having
> that .bat file --- you could, and should, run unzip32.exe itself,
> directly from your C program, or rename/copy unzip32.exe to
> unzip.exe, if it's just the name "unzip" you're after.

I believe that using 4dos will allow you to do all those things
via a .btm file.

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