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Article #7823

Re: 2 questions: _argv and radio buttons

#7823
From: Ephraim Vider
Date: Wed, 02 Jan 1991 15:53
31 lines
1612 bytes
In article <1990Dec27.224724.8404@progress.com>, billf@progress.COM (Bill Ferro)
says:
>
>
>I found that Windows "extern char *__argv[]" is actually a pointer to
>the real argv.  In my case, in WinMain, I call a MAIN procedure.  The
>code goes something like this:
>        extern  char    *__argv[];
>        extern  char    __argc;
>
>        ...
>        main(__argc,(char **)*__argv);
>        ...
>
>-bf
>

Well, there is obviously a mistake in the docomentation, but here is
the correct answer: __argc is really     extern char **__argc
this means that __argc is not the name of an array, but a variable
containing a pointer to a pointer to char. The latter tells the compiler
it has to do three levels of indirection to get to the actual char,
while the former implies only two. Hence the suggested solution works,
but it is not elegant nor necessary.

I suppose this should be done on comp.lang.c or something,
but the question was originated here...

                  Hope this clears the fog,
                        Ephraim Vider
                        p88035@barilvm
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Message-ID: <91002.175322P88036@BARILVM.BITNET>
Path: arc1-ca.pugleaf.net!utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!uunet!zaphod.mps.ohio-state.edu!julius.cs.uiuc.edu!psuvax1!psuvm!barilvm!p88036
References: <136@mixcom.UUCP> <1990Dec27.224724.8404@progress.com>

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Path: arc1-ca.pugleaf.net!utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!uunet!zaphod.mps.ohio-state.edu!julius.cs.uiuc.edu!psuvax1!psuvm!barilvm!p88036
From: P88036@BARILVM.BITNET (Ephraim Vider)
Newsgroups: comp.windows.ms
Subject: Re: 2 questions: _argv and radio buttons
Message-ID: <91002.175322P88036@BARILVM.BITNET>
Date: 2 Jan 91 15:53:22 GMT
References: <136@mixcom.UUCP> <1990Dec27.224724.8404@progress.com>
Organization: Bar-Ilan University Computing Center, Israel
Lines: 31