From:	Peter Gerwinski <peter AT agnes DOT dida DOT physik DOT uni-essen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: HELP:NEED GPC graphics library
Date:	9 Dec 1997 19:06:29 GMT
Organization:	Universitaet Essen
Lines:	33
Message-ID:	<66k4rl$ffk3@mx2.hrz.uni-essen.de>
References:	<3486acc5 DOT 90316106 AT netnews DOT cf DOT ac DOT uk> <3487B4C2 DOT 18D4 AT techfak DOT uni-kiel DOT de> <66c8ss$fce4 AT mx2 DOT hrz DOT uni-essen DOT de> <348D482B DOT FA8F6419 AT cardiff DOT ac DOT uk>
NNTP-Posting-Host:	agnes.Dida.Physik.Uni-Essen.DE
To:	djgpp AT delorie DOT com
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Mehrdad Ghassempoory <ghassempoory AT cf DOT ac DOT uk> wrote:
>
> My unit is can be easily ported to work with GPC and Borland Pascal. I
> have now upgraded to GRX22, but I can't compile the examples. I have
> posted another message here asking for help.

You probably have to upgrade your GPC to beta 971001.
See the GPC home page (URL below) for more information.

Hartmut Schirmer wrote:
>
> PS: It's not that straight forward William says, you have to deal with
>     different string types in Pascal and C for several functions ...

The external declaration of a C function that wants a string

    extern void foo ( char *bar );

reads in GPC syntax

    Procedure Foo ( Bar: CString ); C;

If you want to pass a Pascal string to that procedure just
add the #0 character manually.

Hope this helps,

    Peter

 Dipl.-Phys. Peter Gerwinski, Essen, Germany, free physicist and programmer
peter DOT gerwinski AT uni-essen DOT de - http://home.pages.de/~peter.gerwinski/ [971005]
 maintainer GNU Pascal [971001] - http://home.pages.de/~gnu-pascal/ [971005]
PGP: AC6C 9445 BE28 A496 0ECC E912 4725 8275  FIGHT SPAM: http://maps.vix.com/

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