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Console App Printing using Borland C++ Builder 4.5

Posted on 2002-03-10
Medium Priority
Last Modified: 2011-10-03

I need to write to the printer froma Console App.

Previously when I used Turbo C++ the follwing worked

fprintf(stdprn,.....   etc

It doesnt in C++ Builder 4.5

How can I get round this. Any info would be useful..
Question by:tinybear
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Author Comment

ID: 6854360
BTW Im running C++ Builder on Win XP it that is relevant, but I would need it to work in Turbo C++ if possible as that is the compiler used by my college ( they have limited resources)

Expert Comment

ID: 6854761
In a Windows program, you don't have theprinter file already open, so you can do the following:

FILE *stdprn = fopen("LPT1", "wt");
fprintf(stdprn, "Printing Test\n\n");



Author Comment

ID: 6855513
Cheers will give it a go when I get back home.
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Author Comment

ID: 6855537

Cant get it to work in Turbo C++

will try it in C++ Builder later


Expert Comment

ID: 6855796
Why not? What's happening?
I tested it here and it works just fine.
Be aware that some printers just start printing when you send a full page or a eject page sinal.


Author Comment

ID: 6855897
I'll get a full list of the errors when I get in to college later but..

The FILE keyword generates errors


Author Comment

ID: 6856133
In Turbo C++ 3.0

When I compile with the FILE *stdprn = fopen("LPT1","wt")

The first error generated is

Cannot Convert 'FILE *' to 'FILE * &[4]'

and then several others.


Accepted Solution

wenderson earned 200 total points
ID: 6858349
What version of Turbo C++ 3.0 are using, DOS or Windows?
The DOS version already has stdprn defined as a global variable, just include stdio.h.
There's no need to open the file, because it's already opened, just do:

#include <stdio.h>
int main()
  fprintf(stdprn, "Teste\n");
  return 0;

I don't remember if the Windows version has a stdprn defined, if not, you must do "FILE *stdprn = fopen("LPT1", "wt");" before you start printing.


Author Comment

ID: 6859738
Yes it is the DOS version (the college really need to update), but I use Borland C+ Builder3 at home, so I need the program to work in both..which is my dilemma.

Maybe I'll just have to compile 2 versions.

Author Comment

ID: 6863750
Please Allocate Points to wenderson

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