Date: Tue, 18 Feb 2003 08:44:09 +0200
From: Zaretskii Eli <ezaretski AT elta DOT co DOT il>
Subject: RE: How to open LPT1: as file?
To: "Wolfgang v. Hansen" <hansen AT fom DOT fgan DOT de>, djgpp AT delorie DOT com
Message-id: <4D19136444628A40840EFE8C5AE04147017A16@ELTIMAIL1.elta.co.il>
MIME-version: 1.0
X-MIMEOLE: Produced By Microsoft Exchange V6.0.6249.0
Content-type: text/plain; charset=us-ascii
Content-transfer-encoding: 7BIT
Content-class: urn:content-classes:message
Thread-topic: How to open LPT1: as file?
Thread-index: AcLWWMZPILxIPILWTJGGfolJ6uZAowAwBXrg
X-PRIVAWALL-ID: 0002556710ab
X-OriginalArrivalTime: 18 Feb 2003 06:44:10.0318 (UTC)
 FILETIME=[24501EE0:01C2D719]
Reply-To: djgpp AT delorie DOT com


This message was scanned for viruses and other malicious code by PrivaWall.


This mail was sent from ELTA SYS LTD.


> From: Wolfgang v. Hansen [mailto:hansen AT fom DOT fgan DOT de] 
> Sent: Monday, February 17, 2003 9:43 AM
> 
> I would like to access an old dot matrix printer directly just by 
> opening the port and sending appropriate bytes to it. I tried to 
> fopen("LPT1:", "w") but that didn't succeed.

Lose the colon after "LPT1", and it will work.

Also, you want to use "wb" rather than just "w", since printers need to
accept binary non-printable characters (the commands to the printer),
not just plain text.


This message is processed by the PrivaWall Email Security Server.