dev-cpp-users

[Dev-C++] Re: Dev-cpp-users digest, Vol 1 #1034 - 15 msgs

[Samuel K. <big...@ya...>]

Thanks Carlos,

You was right, declarations have to be at the front or
.c files. I'm used to writing in c++ and forgot about
that. Trouble is this only works for Linux because it
treats printers as files while windows (I think)
treats them differently. So I still can't print.

Samuel Keding

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[Dev-C++] Re: Dev-cpp-users digest, Vol 1 #1034 - 15 msgs

[Samuel K. <big...@ya...>]

okay,

I got another one for you. I thought windows would
create a file named LPT1 and put it in the directory
where I ran the .exe file. It didn't. I changed the
file name to USB1 and looked again. There was a file
named USB1 in the same directory as my .exe file. 
When I write LPT1 though and run the .exe file, I have
to stop the program by going through ctrl alt del.
Nothing is ever printed, no file made, or if it is I
don't know where it is going. I'm confused. Here is my
source if it will help.

#include <conio.c>



char PrintBuf[5000]; // make it large enough!

int printer(const char *Format,...) //user defined
function
{
char *Ptr = PrintBuf+lstrlen(PrintBuf);


va_list arglist;

va_start(arglist,Format);
vsprintf(Ptr,Format,arglist);
va_end(arglist);
return printf(Ptr);
}

int main()
{

FILE* sfile;
PrintBuf[0] = 0;


// your program runs here......
// just use printer() instead of printf. 
// It will print text to screen and into the buffer
// example:
printer("\t\t\tS K DATABASE SOLUTIONS\n\n");
printer("\t\t\t=-=-=-=-=-=-=-=-=-=-=-\n\n");
printer("Employee ID: %d\n",1001);
printer("Employee Name:%s\n","Shashi");
printer("Employee Pay:%f\n",1000.75);
printer("-===-=-=-=-=-=-=-=-=-=-=-=-");

// Now print the buffer to the printer

sfile = fopen("LPT1","wt");


if(sfile)
{
fwrite(PrintBuf,1,lstrlen(PrintBuf),sfile);
fputc('\f',sfile); // add a formfeed for pageprinters
fclose(sfile);
}

return 0;
}



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Re: [Dev-C++] ... about printing

[Luigi S. <gi...@li...>]

At 10.35 10/09/02 -0700, Samuel Keding wrote:
>okay,
>
>I got another one for you. I thought windows would
>create a file named LPT1 and put it in the directory
>where I ran the .exe file. It didn't. I changed the
>file name to USB1 and looked again. There was a file
>named USB1 in the same directory as my .exe file.
>When I write LPT1 though and run the .exe file, I have
>to stop the program by going through ctrl alt del.
>Nothing is ever printed, no file made, or if it is I
>don't know where it is going. I'm confused. Here is my
>source if it will help.
>...

Hello, Samuel

Try the following:
- open a Dos box
- log somewhere where you have a text file (for instance your source code)
- try to "copy" the text file on the printer ("copy foo.txt LPT1")

If the above works, then you are likely to print by opening the file named 
"LPT1" (or "PRN") and writing to it as you would do to a regular file.

I can't test the solution I'm suggesting, because I have a sort of "Windows 
printer", that is: I am allowed to print using "notepad" print command, but 
if I try to "copy" something to the printer, using a Dos box, nothing 
happens, I've been told that this is because some (cheap?) printers aren't 
smart enough and need Windows to work.


--
gisan