Parallel port communication (dll, ocx) ?

I need to comm' with the PC's parallel port. Anyone now of a way to do this ? The MS-Comm control is serial port only!
Preferably for 32 bit solution.
zokAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

rmichelsCommented:
Under Windows 95, I have written C code to access the parallel port, but it had to be done in Visual C++ 4.0 and they removed the port access functions in VC 5.0.  Under NT you need a device driver to do it.

In VB Prog Journal, I have seen the following add:

WinRT OCX, Hassle Free Hardware Control
Bluewater Systems. Inc
800-962-2114
e-mail: info@bluewatersystems.com
www.bluewatersystems.com

I have NOT used this control.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
kamallCommented:
If rmichels's answer will not help you solve the problem, I have a DLL that enables you to read and write to the parallel port as well as to the other computer ports in VB.
Give me your e-mail address, and I will send it to you with a sample project. (Please unlock the question first).
Regards
0
rmichelsCommented:
ARe the requirements to work under NT? Because if so, the DLL solution will not work.
0
The Ultimate Tool Kit for Technolgy Solution Provi

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy for valuable how-to assets including sample agreements, checklists, flowcharts, and more!

kamallCommented:
You are right rmichels. The DLL solution will only work under Win95, and what you have suggested regarding WinRT is one of the feasible solution for Win NT.
0
dirtdartCommented:
CreateFileEx is supposed to work with parallel ports, serial ports, files, mailslots, named pipes, and almost anything else.  I have used it to create a driver for a custom RS232 device.  If you like, I can provide you with some code for that as an answer.
0
rmichelsCommented:
but can you actually control all of the lines in the port for create file?...more than just the data and handshaking lines?  If   the create file solution works, then reject my answer.

0
dirtdartCommented:
Honestly, rmichaels, I'm not sure.  I never had the need to go past data transmission for my project, since the RS232 device only had 3 lines to begin with.  But Microsoft claims that this is the "new and improved solution."  You know how that goes.  The always go and fix something that isn't broken.
0
rmichelsCommented:
I can understand using the CreateFileEx for sending/receiving data across the RS232 or Parallel port, but to me that is a limiting solution. It depends upons Zok's needs.  Anytime I have used the parallel port, I had to tweak and diddle the control lines and data lines to control an external device.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Visual Basic Classic

From novice to tech pro — start learning today.