From: "Sergi Marsal" <smarsal AT abonados DOT cplus DOT es>
Newsgroups: comp.os.msdos.djgpp
Subject: print in djgpp
Date: Thu, 21 May 1998 21:25:13 +0200
Organization: Telefonica Transmision de Datos
Lines: 36
Message-ID: <6k1ut6$4gn$2@talia.mad.ibernet.es>
NNTP-Posting-Host: abonado-195-53-36-128.cat.es
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

I have a problem when I try to detect when is the printer available por
printing, I know it can be done because in other programming languages like
clipper I can test it before printing, but I don't know how to do it in
DJGPP

in C the code is like this

#include <stdio.h>

int main(void)
{
    FILE *prn;

    if ((prn=fopen("prn", "w"))==NULL)
    {
        printf("Printer not available");
    }
    else
    {
        printf("Printer available");
    }
    return 1;
}

but in DJGPP doen't work...

the "prn" file I try to open is the name of the printer device in DOS and I
have to open it for write only, but I tried other ways (read/write, etc)

if anyone know of other ways to do it (interrupts, ports, whatever), please
tell me. I need it for my school project.

thanks everyone for reading this message