Solved

Getting a printers status if there is no windows print driver

Posted on 1997-06-21
8
246 Views
Last Modified: 2010-04-04
I want to be able to get the status from a printer connected to LPT1,LPT2 etc. The printer has no windows print driver installed, its data is sent via a text file opened as LPT1 etc. Any solutions?
0
Comment
Question by:DaveG
  • 5
  • 2
8 Comments
 

Expert Comment

by:bsys
ID: 1337361
I guess that this is the same question as I asked before (a couple of days ago).
So the value for this question is 200 + 230 points (isn't that worth the answer??).
(FOR WHAT KIND OF APPLICATION THAT)
0
 

Expert Comment

by:bsys
ID: 1337362
Can this software be used for COM ports also???
0
 
LVL 3

Expert Comment

by:sperling
ID: 1337363
What delphi and windows version(s) do you need to support?

Regards,

Erik.
0
 

Accepted Solution

by:
bsys earned 200 total points
ID: 1337364
I have found it!!! I have two assembler routines, one for a com port and one for a lpt port!! It works just fine, let me know if you are interested!!! I'll send it by E-Mail!!!
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Expert Comment

by:bsys
ID: 1337365
Here it is DaveG,I am using this in my POS program:

function TPrinterStatusForm.CheckCOM(Printer: Word): Word;
var
   PS: Word; {PS = Printer Status}
begin
     asm
       mov dx,Printer {COM, starts from 0}
       mov ax,300h
       int 14h
       and ax, 127
       mov PS,ax
     end;
     Result := PS;
end;

function TPrinterStatusForm.CheckLPT(Printer: Word): Word;
var
   PS: Byte; {PS = Printer Status}
begin
     asm
       mov dx,Printer {LPT}
       mov ah,02h {Status request}
       int 17h
       mov PS,ah
     end;
     Result := PS;
end;

And this works!!!
0
 

Expert Comment

by:davegreen
ID: 1337366
This is the routine I worked out myself from investigation- it is more or less the same:

function PrinterStatus(OutFile: Word) : byte;
var
  PrinterPort: Word;

  function GetStatus : byte;
  asm
     mov AH,$02 {get printer status}
     mov DX, PrinterPort   {lpt1=0, lpt2=1}
     Int $17   {get printer status}
     mov AL, AH
  end;
begin
  PrinterPort := OutFile;
  Result := GetStatus;
end;


The bits returned should correspond as follows

7 6 5 4 3 2 1 0   bit value
-----------------------------
1                   printer not busy
0                   printer busy
  1                 printer acknowledgment
    1               out of paper
      1             printer selected
        1           i/o error
          ? ?       unused
              1     timeout

This code works too....
0
 

Expert Comment

by:davegreen
ID: 1337367
I withdraw this question...
0
 

Expert Comment

by:bsys
ID: 1337368
Ok, what do you want then?????????
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…

867 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now