Detecting a printer

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Article #2979

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#2979

From: LAUGHLIN, CHET
Date: Fri, 09 Nov 1990 22:40

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I am upgrading/maintaining a program written in TurboC that uses
the BIOSPRINT function to print to a printer.  However, if a printer
is not attached it takes several seconds (10-30) before the program
gets an error code back.  What is a *quick* way to detect if a
printer is out there?  Below is a sample of the code used in the
program.

prog_print_char(c)    /* of course, no documentation...*/
   char c;
{
   return(biosprint(0,c,0));
}

thankyou
+---------------------------------------------------------------+
| Chet Laughlin                  CTL8588@RIGEL.TAMU.EDU         |
|   "I have no opinions as I          (128.194.4.4)             |
|    do not exist, my lawyers                                   |
|    told me so."                                               |
+---------------------------------------------------------------+

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!yale!cmcl2!lanl!ctl8588@star.tamu.edu
From: ctl8588@star.tamu.edu (LAUGHLIN, CHET)
Newsgroups: comp.os.msdos.programmer
Subject: Detecting a printer
Message-ID: <5493@lanl.gov>
Date: 9 Nov 90 22:40:23 GMT
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