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From: "Markus R. Keßler" <dimke DOT fax AT uni DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: lpr for djgpp?
Date: Fri, 28 Mar 2008 23:18:24 +0100
Organization: Nein Danke
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Lets Go Canes <letsgonhlcanes AT yahoo DOT com> wrote:

>> #include <stdio.h>
>> 
>> int main(void) {
>>    int ch;
>> 
>>    while (EOF != (ch = getc(stdin))) putc(ch, stdout);
>>    return 0;
>> }
>> 
>> should do it.  Exercise it by setting stdout to point to the
>> printer.  Something like "lpr > LPT".
>
>Maybe I am missing something here, but, doesn't the above program
>just add a null pipe element?  In other words, if the above program
>is called lpr, I don't understand how "cat file | lpr > LPT" is an
>improvement over "cat file > LPT".  Was the intent that more would
>be added to the program ("season to taste")?

Well, at least in the bash this doesn't work on my pc.
Maybe "LPT" as a device isn't know by default.

But stdprn is defined within the stdio.h of gcc 3.4.3 and so I can
print to this device via "putc ( ch , stdprn ). As Chuck already
mentioned this comes along with the drawback that there is no way to
stop a printout in a similar way like lprm.

So maybe one could capture stdin and as soon as there is an EOF then
send this temporary file to /dos/print with the option to delete a
part or or the whole queue with /dos/print /C (or /T) called from
lprm(.exe).

Best regards,

Markus
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