parallel port problem

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hi i create a program a couple years ago in order to control step motor via parallel port by using VC++2005 and XP, it worked fine
but now i am writing the same codes and linking the same library (inpout32.lib) in VC++ 2008 and windows 7, it also works and no error acoours, but i cannot control parallel port, i cant figure out what the problem isç pls help!. here is my code;

#include "stdafx.h"

#define PORT 0x378



short _stdcall Inp32(short PortAddress);
void _stdcall Out32(short PortAddress, short data);


int main(array<System::String ^> ^args)
{
	Out32(PORT,255);
	
}

Posted 24-Dec-09 10:46am

Adnan Merter

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prasannakkcse1 · Answer 1 · 2009-12-26T18:55:00

hi...
There is no problem with the code..

To test the parallel port, use LEDS first... connect 8 LED's to the 8 ouput pins of parallel port...

for the code 'Out32(PORT,255);' , all 8 LEDs should glow, else give the data as 1,2,4,8,16,32,64,128 each time to see whether each LED glows individually..

If the LEDs dont respond, then i am sure, u need to flush the parallel port, before controlling it...

prasannakkcse1 · Answer 2 · 2009-12-27T03:15:00

Solution 3

U can use win95io.dll to control parallel port from visual basic....

Posted 27-Dec-09 3:15am

prasannakkcse1