mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-07 18:27:58 +02:00
356a3d1609
* provided local copies or required styles since debian does not
supply the listings.sty anymore
73 lines
2.8 KiB
TeX
73 lines
2.8 KiB
TeX
%
|
|
% $Id$
|
|
% This file is part of the FPC documentation.
|
|
% Copyright (C) 1997, by Michael Van Canneyt
|
|
%
|
|
% The FPC documentation is free text; you can redistribute it and/or
|
|
% modify it under the terms of the GNU Library General Public License as
|
|
% published by the Free Software Foundation; either version 2 of the
|
|
% License, or (at your option) any later version.
|
|
%
|
|
% The FPC Documentation is distributed in the hope that it will be useful,
|
|
% but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
% Library General Public License for more details.
|
|
%
|
|
% You should have received a copy of the GNU Library General Public
|
|
% License along with the FPC documentation; see the file COPYING.LIB. If not,
|
|
% write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
% Boston, MA 02111-1307, USA.
|
|
%
|
|
\chapter{The PRINTER unit.}
|
|
\label{ch:printerunit}
|
|
|
|
\FPCexampledir{printex}
|
|
This chapter describes the PRINTER unit for Free Pascal. It was written for
|
|
\dos by Florian Kl\"ampfl, and it was written for \linux by Micha\"el Van
|
|
Canneyt, and has been ported to \windows and \ostwo as well.
|
|
Its basic functionality is the same for al supported systems, although there
|
|
are minor differences on \linux.
|
|
|
|
The chapter is divided in 2 sections:
|
|
\begin{itemize}
|
|
\item The first section lists types, constants and variables from the
|
|
interface part of the unit.
|
|
\item The second section describes the functions defined in the unit.
|
|
\end{itemize}
|
|
\section {Types, Constants and variables : }
|
|
\begin{verbatim}
|
|
var
|
|
lst : text;
|
|
\end{verbatim}
|
|
\var{Lst} is the standard printing device. \\ On \linux,
|
|
\var{Lst} is set up using \var{AssignLst('/tmp/PID.lst')}.
|
|
You can change this behaviour at compile time, setting the DefFile constant.
|
|
\section {Procedures and functions}
|
|
\begin{procedure}{AssignLst}
|
|
\Declaration
|
|
Procedure AssignLst ( Var F : text; ToFile : string[255]);
|
|
|
|
\Description
|
|
\linux only. \\
|
|
Assigns to F a printing device. ToFile is a string with the following form:
|
|
\begin{itemize}
|
|
\item \var{ '|filename options'} : This sets up a pipe with the program filename,
|
|
with the given options, such as in the popen() call.
|
|
\item \var{ 'filename'} : Prints to file filename. Filename can contain the string 'PID'
|
|
(No Quotes), which will be replaced by the PID of your program.
|
|
When closing lst, the file will be sent to lpr and deleted.
|
|
(lpr should be in PATH)
|
|
|
|
\item \var {'filename|'} Idem as previous, only the file is NOT sent to lpr, nor is it
|
|
deleted.
|
|
(useful for opening /dev/printer or for later printing)
|
|
\end{itemize}
|
|
|
|
\Errors
|
|
Errors are reported in Linuxerror.
|
|
\SeeAlso
|
|
\seem{lpr}{1}
|
|
\end{procedure}
|
|
|
|
\FPCexample{printex}
|