From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: 103376,8047848c4805a99e
X-Google-Attributes: gid103376,public
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!news1.google.com!news.glorb.com!border1.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!elnk-atl-nf1!newsfeed.earthlink.net!stamper.news.atl.earthlink.net!newsread2.news.atl.earthlink.net.POSTED!14bb18d8!not-for-mail
Sender: mheaney@MHEANEYX200
Newsgroups: comp.lang.ada
Subject: Re: Classwide Parameter?
References: <ckeaod$9hh$03$1@news.t-online.com> <uvfdhozbl.fsf@earthlink.net>
 <ckeelg$dkb$05$1@news.t-online.com>
From: Matthew Heaney <matthewjheaney@earthlink.net>
Message-ID: <umzyseeo5.fsf@earthlink.net>
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Tue, 12 Oct 2004 02:29:41 GMT
NNTP-Posting-Host: 64.185.133.124
X-Complaints-To: abuse@earthlink.net
X-Trace: newsread2.news.atl.earthlink.net 1097548181 64.185.133.124 (Mon,
 11 Oct 2004 19:29:41 PDT)
NNTP-Posting-Date: Mon, 11 Oct 2004 19:29:41 PDT
Organization: EarthLink Inc. -- http://www.EarthLink.net
Xref: g2news1.google.com comp.lang.ada:5067
Date: 2004-10-12T02:29:41+00:00
List-Id: <comp.lang.ada>

matthias_k <nospam@digitalraid.com> writes:

> Thanks for that answer. However, I'm still having problems (I have
> rewritten the code to be in one single package now):
> 
> <snip>
> package Graphics is
> 
>     type Shape is abstract tagged null record;
>     procedure Draw (Obj: Shape'Class);

Get rid of this operation.  It's a "class-wide" operation (like a static
method in C++), and hence the operation isn't primitive for the type
(and therefore doesn't dispatch).