Path: utzoo!utgpu!attcan!uunet!husc6!bloom-beacon!apple!voder!kontron!optilink!cramer
From: cramer@optilink.UUCP (Clayton Cramer)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Microsoft C Bug or Feature ?????
Message-ID: <334@optilink.UUCP>
Date: 5 Aug 88 16:23:38 GMT
References: <8808021504.AA05128@wilson.csri.toronto.edu> <3559@bsu-cs.UUCP>
Organization: Optilink Corporation, Petaluma, CA
Lines: 36

In article <3559@bsu-cs.UUCP>, dhesi@bsu-cs.UUCP (Rahul Dhesi) writes:
> In article <8808021504.AA05128@wilson.csri.toronto.edu> byu@csri.toronto.edu
> (Benjamin Yu) writes:
> >I was trying to putc a byte (hex 1A) to stdprn using Microsoft C V4.0.
> >Since hex 1A is ctrl-Z which stands for end-of-file, the byte is never
> >sent.
> 
> When sending output to a character-oriented device, a control Z is used
> to indicate end-of-file too.  This isn't necessary, but it happens.  So
> the PRN printer device driver, when it sees control-Z, assumes no more
> data will arrive and freezes up, refusing to accept any more
> characters.
> 
> A hypothetical solution is to put the printer device into raw mode.
> You have to write a program to do this.  I don't know if it will work
> for you.
> -- 
> Rahul Dhesi         UUCP:  <backbones>!{iuvax,pur-ee,uunet}!bsu-cs!dhesi

Use the setmode(fileno(stdprn), O_BINARY) call to put stdprn into 
raw mode from C.

Clayton E. Cramer












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