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Newsgroups: comp.sys.apple2.programmer
Subject: Re: Orca Pascal 2.0
Message-ID: <1993Jul15.121855.23710@actrix.gen.nz>
From: dempson@swell.actrix.gen.nz (David Empson)
Date: Thu, 15 Jul 1993 12:18:55 GMT
Sender: dempson@actrix.gen.nz (David Empson)
References: <1993Jul14.012824.143@pro-palmtree.socal.com>
Organization: Actrix Information Exchange
Lines: 61

In article <1993Jul14.012824.143@pro-palmtree.socal.com> klee@pro-palmtree.socal.com (Kevin Lee) writes:
> I've just recently got Orca Pascal 2.0 and I have a question...
> How do I use a unit like QuickDrawII in my main program
> and then compile it and link it and whatever.
> Thanks for any help.

The "uses" clause is all you need to know about, unless you're writing
your own UNITs.  The ORCA/Pascal library is automatically linked in
whenever you link the program.  If you write your own units, you have
to link them explicitly, as well as USE them in the main program.

Read chapter 4 of the ORCA/Pascal manual (Programming on the Apple
IIgs).  The section on "Graphics Programs" shows how to write simple
programs which use QuickDraw but no higher-level parts of the toolbox.

If you need to know how to use QuickDraw, it is documented in Toolbox
Reference Volume 2.

Your program would look something like this:

PROGRAM whatever;

USES Common, QuickDrawII;

{ Anything else you need in here }

BEGIN

  StartGraph(320);            { Assuming you only need QuickDraw }
  { or StartGraph(640); }

  { Use QuickDraw }

  EndGraph;

END.


If you're using the text-based shell, you could compile and run this
program using:

compile whatever.pas keep=whatever
link whatever keep=whatever
whatever

or

cmpl whatever.pas keep=whatever
whatever

or

run whatever.pas keep=whatever


It is even easier in PRIZM, but I haven't used it for so long that I
can't remember what the menu commands are.  :-)
-- 
David Empson                                                               
dempson@swell.actrix.gen.nz                                                
Snail mail: P.O. Box 27-103, Wellington, New Zealand