problem using LPT port.

[vmax]

hello,
i want to send data to parallel port by writing a class in visual C++. i have code available in C to send the data to parallel port.it uses instruction outportb().
my system is windows xp 64 bit.it does not supports instruction outportb().

can any one tell me how can i send data to parallel port by doing a programming in VC++.?do i need to write a DLL for same? if yes then how can i write DLL for that? is it readily available from internet on any link?


Thanks in advance

With regards,
vamx

[numberwhun]

hello,
i want to send data to parallel port by writing a class in visual C++. i have code available in C to send the data to parallel port.it uses instruction outportb().
my system is windows xp 64 bit.it does not supports instruction outportb().

can any one tell me how can i send data to parallel port by doing a programming in VC++.?do i need to write a DLL for same? if yes then how can i write DLL for that? is it readily available from internet on any link?


Thanks in advance

With regards,
vamx

Since this is more of a C++ question than a Windows question, I will move this over there.

Regards,


Jeff

[weaknessforcats]

There are two issues here: a) what data is going to LPT1 and b) what is plugged into LPTI to accept the data ??

You just can't send data to LPT1. The data has to be compatible wioth the device connected to LPT1. If it's an HP Leaserjet 4M, then you need to send data to the HP parallel port driver for that printer. Some printers like these require you write in PostScript.

If yo have connected your own device to LPT1, then you need to write a parallel port driver (see MSDN) to accept that data and push it out to the device on the correct pins.