Output to Printer Problems

Output to Printer Problems

[Pheet]

Hiya,

I am having problems printing with ada. I'm using GNAT 3.13p
(GCC 2.8.1) on a Win98 box (yes, I know, don't ask).

I'm trying code along these lines:

with Text_IO;
use Text_io;

...

Procedure Print is
File:FIle_Type;
Begin
        open (File, Out_Mode, "LPT1");
        put(File, "Hello Printer!");
        close(File);
...
end print;

My printer is definitely called LPT1 'cause it's there in the
hardware
profile and i can do:
>type test.txt > LPT1 
from the dos prompt and this works as expected.

The error I get is always ADA.IO_EXCEPTIONS.STATUS_ERROR , not a
name
error.

Any ideas or suggestions on this would be greatfully appreciated, as
it's starting to irritate me now! :-)

TIA,

Pheet

Re: Output to Printer Problems

[David C. Hoos, Sr.]

----- Original Message ----- 
From: "Pheet" <a.pheet@NOTINNEDMEATntlworld.com>
Newsgroups: comp.lang.ada
To: <comp.lang.ada@ada.eu.org>
Sent: June 09, 2002 10:29 AM
Subject: Output to Printer Problems


> Hiya,
> 
> I am having problems printing with ada. I'm using GNAT 3.13p
> (GCC 2.8.1) on a Win98 box (yes, I know, don't ask).
> 
> I'm trying code along these lines:
> 
> with Text_IO;
> use Text_io;
> 
> ...
> 
> Procedure Print is
> File:FIle_Type;
> Begin
>         open (File, Out_Mode, "LPT1");
>         put(File, "Hello Printer!");
>         close(File);
> ...
> end print;
>
Three problems I can see with your program, viz.:

  1. There is no file mode in Text_IO called "Out_Mode";
     Perhaps you meant "Out_File."

  2. An file of mode Out_File cannot be opened -- it can
     only be created.  Only files of In_File, and Append_File
     modes can be opened, and printers generally don't accept
     being opened in Append_File mode.

  3. You probably will need to add a line "New_Page (File);"
     in order to get the printer to eject the page.


   

Output to Printer Problems

[Pheet]

Hiya,

I am having problems printing with ada. I'm using GNAT 3.13p
(GCC 2.8.1) on a Win98 box (yes, I know, don't ask).

I'm trying code along these lines:

with Text_IO;
use Text_io;

...

Procedure Print is
File:FIle_Type;
Begin
	open (File, Out_Mode, "LPT1");
	put(File, "Hello Printer!");
	close(File);
...
end print;

My printer is definitely called LPT1 'cause it's there in the hardware
profile and i can do:
>type test.txt > LPT1 
from the dos prompt and this works as expected.

The error I get is always ADA.IO_EXCEPTIONS.STATUS_ERROR , not a name
error.

Any ideas or suggestions on this would be greatfully appreciated, as
it's starting to irritate me now! :-)

TIA,

Pheet

Re: Output to Printer Problems

[Jeffrey Carter]

Pheet wrote:
> 
> Procedure Print is
> File:FIle_Type;
> Begin
>         open (File, Out_Mode, "LPT1");
>         put(File, "Hello Printer!");
>         close(File);
> ...
> end print;

I have successfully printed from Ada (GNAT) under Win98 by using Create,
rather than Open.

> 
> Any ideas or suggestions on this would be greatfully appreciated, as
> it's starting to irritate me now! :-)

One suggestion would be that you only post your message once.

-- 
Jeff Carter
"I unclog my nose towards you."
Monty Python & the Holy Grail