Thread: accsesing the paralell port in c++

i am writing c ode for a college project i'm using dev c++

what i was wondering is, how would you go about doing it using dev c++

i managed to do it using microsoft visual c++ using

Code:

#include <iostream.h>
#include<io.h>
#include<windows.h>




#define DATA 0x378
#define STATUS 0x379
#define CONTROL 0x37a

and this in main

Code:

HANDLE h;
h = CreateFile("\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_ EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE) {
printf("Couldn't accses giveio device\n");
}
CloseHandel(h);

but help 'cause

Code:

_outp(int addres,value);

_inp(addres);

aren't working


thanks kindly

_inp and _outp are most likely failing because they compile to assembly instructions that only the OS is allowed to use, and your program is running in userspace. With the VC++ code, you used OS services to send the data to the 'raw' device, which makes it allowable.

I'm not a hardware expert, but that's the likely issue.

Dovel, why are you using that stupid compiler?? only joking. It works on visual, so I don't see what's wrong with using that. (your laptop doesn't have a parallel port ... ) ask richie, it's something about conio.h not being standardised