Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!DMSWWU1A.BITNET!ONM07
From: ONM07@DMSWWU1A.BITNET
Newsgroups: comp.sys.atari.st
Subject: GDOS Handles
Message-ID: <8807061204.AA27467@ucbvax.Berkeley.EDU>
Date: 6 Jul 88 12:04:24 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 16
X-Unparsable-Date: Wed, 06 Jul 88 14:02:40 MES

Date: 6 July 1988, 13:58:58 MES
From: Julian F. Reschke         (02501) 13279        ONM07    at DMSWWU1A
      Linckensstrasse 113
      4400 Muenster
      Westfaelische Wilhelms-Universitaet Muenster
      Fachbereich Mathematik
To:   Info Atari16-Digest                            INFO-ATA at SCORE

Concerning Leo de Wit's program to read characters from screen:

PLEASE NEVER NEVER NEVER do VDI-calls with a zero-handle. Valid VDI
handles start at 1! Calling a VDI-function with zero-handle will result
in an error when working with Atari's brand new GDOS (AMCGDOS)!
What's true: the desktop WINDOW used by the AES has handle nr. 0. This
is very different from VDI-*DEVICE*-handles!!

Julian