Initialize and Test Printer (LX-300+) in windows 200/xp

Experts,

The codes below iniatialize and test printer LX-300+ using windows 2000/xp but it does'nt work. Is there anything that I forget?


Thanks.

// Initialize the port
#include <dos.h>

union REGS regs;

regs.h.ah = 1;
regs.x.dx = 0;
int86(0x17, &regs, &regs);

// Test if Online

#include <dos.h>

union REGS regs;

regs.h.ah = 2;
regs.x.dx = 0;
int86(0x17, &regs, &regs);

if (regs.h.ah) printf("Printer is not ready.");