Printing in linux does not seem to work

[mtmigs]

I tried posting a question about using libraries. Many people looked at it but I got no replies. So I will try a more direct approach.

I am trying to print from an old Clipper program I have since successfully compiled and run under linux. Everything seems to work except the printing. The original Clipper program would print to a dot matrix printer attached to the computer's parallel port. My linux printer does not have a parallel port so I need to print to either a usb printer or even better to a networked printer.

I have a printer defined with cups named Johns_HP_LaserJet. Having looked at several documents about printing using linux and it seems putting this line in the program should work:

SET PRINTER TO "|lpr -PJohns_HP_LaserJet"

Well it does not work. Does anyone know how to get harbour programs to print when running under linux?
 

[Alain Aupeix]

Le 28/04/2017 à 04:40, mtmigs a écrit :

> SET PRINTER TO "|lpr -PJohns_HP_LaserJet"
>
> Well it does not work. Does anyone know how to get harbour programs to
> print when running under linux?

Sorry, but I use hwgui under linux, and it's different

I thought of :

set printer to "Johns_HP_Laserjet"

But I suppose you already have tried.
Why this pipe ?

A+

--
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Alain Aupeix
http://jujuland.pagesperso-orange.fr/
http://pissobi-lacassagne.pagesperso-orange.fr/
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U.buntu 12.04 | G.ramps 3.4.9-1 | H.arbour 3.2.0dev (2016-12-16 10:05) |
Hw.Gui 2.20-3 (2630)
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[mtmigs]

set printer to "Johns_HP_Laserjet"

That just creates a file  "Johns_HP_Laserjet.prn".

[matt johnson]

try function SETDEFAULTEXTENSIONS( .F. ) before set printer to,  will create printfile without .prn extension. 

On Friday, April 28, 2017 8:27 AM, mtmigs <tmigl...@gmail.com> wrote:

set printer to "Johns_HP_Laserjet"

That just creates a file  "Johns_HP_Laserjet.prn".

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[mtmigs]

On Friday, April 28, 2017 at 9:27:48 AM UTC-5, matt johnson wrote:

try function SETDEFAULTEXTENSIONS( .F. ) before set printer to,  will create printfile without .prn extension. 

I do not want to print to a file. I want to print to a printer. The printer I am currently using is named "Johns_HP_Laserjet".

"Johns_HP_Laserjet" is not the name of a file to which I can print. It is the name of a printer and it seems harbour programs compiled on linux cannot print directly to a printer.

[Marcelo Linha Verde]

Hi,

I did this: ( i'm very happy ! )

Fist: i print to temporaly spool file.
Next: __run( 'cat /tmp/spoolfile | lp -d printer' )

To direct print see contrib/hbcups

Regardless

Marcelo

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sexta-feira, 28 abril 2017, 08:47PM -03:00 de mtmigs tmigl...@gmail.com:

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[do...@people.net.au]

In any multi user system you will be printing to a file regardless of whether you are aware of it or not.  Otherwise print jobs would potentially intermix which would be an absolute disaster.
What's wrong with writing to a file and then using cupsPrintFile() to print it or shell out and use lpr?  As a bonus you can also potentially preview what will print.  Also you can give your print job a name which is useful if multiple jobs are sent to a printer.
In my opinion writing direct to the printer, if you could actually do it, is bad practice.  My understanding is that in Linux you are writing to a print queue rather than a printer which could, I believe, be serviced by more than one printer.
Let's move away from all the kludges of the MSDOS days.
Regards
Doug



On Fri 28/04/17 16:47 , mtmigs tmigl...@gmail.com sent:

[matt johnson]

The file will be printed, then deleted.  Try it, you will like it.  It is SET( _SET_DEFEXTENSIONS, .F. ) 

[António]

Hello,

My system prints to local POS printers with this:

local sPrinter := SET(_SET_PRINTFILE, "|lpr" )
local sDevice  := SET(_SET_DEVICE, "PRINTER" )

@ 0,0 say "Something to print"

SET(_SET_DEVICE, sDevice)
SET(_SET_PRINTFILE, sPrinter )

Works with local attached LPT printer. Works as well with samba shared printers, as long as they are configured as "server's default printer"

Using "|lpr -P printer_name" should also work... Are you sending properly formatted PCL documents that your printer understand ?
HTH
António