I'm about to create a program using VB6 that will open D1 of printer port...
Can someone help me out with this one, thanks in advance!
I don't have any idea in programming activeX DLL...

I am a bit unclear as to what you actually need help with.

You are currently programming in VB6, but you have never programmed an ActiveX Dll?

What about this do you need help with?

Woody Z
http://www.learntoprogramnow.com

Yes i know how to program using VB6 but my knowledge is not that broad yet, and i need to know how to program activex dll to turn on the D1 of the port....

It is easy to create a ActiveX dll project.

When you create a project in VB6, select the ActiveX Dll project type in the New Project dialog. This will create an application with a single class in it.

Name your class whatever you want. You will need some public methods (properties, subs and/or functions) to expose the functionality you need.
This class will have its instancing property set to Multiuse by default. This is typically the setting you will want for this. This allows other applications which reference your dll to be able to use the public methods.

Within the class you will place your code for "opening D1 of printer port". I am not sure what that means.

An excellent book on writing ActiveX components is Dan Appleman's Developing COM/ActiveX Components With Visual Basic 6 (Paperback). This book is only available used, but you can get it for about $1 US in the United States at places like half.com or amazon. I highly recommend you get this book if your main issue is how to write ActiveX components.

As far as working with the printer - that is another issue. What exactly do you mean "Open D1 of Printer Port"? A good place for parallel port info is Jan Axelson: http://www.lvr.com/parport.htm



Woody Z
http://www.learntoprogramnow.com

maybe D1 is the bit 1 of the output port?

But I do not understand why this should be in an ActiveX. Can't just be in a standard executable?

Marco

PS: that book of Appleman is the only one left in my shelf... nothing like that!

"There are two ways to write error-free programs. Only the third one works."
Unknown

Yes sir, D1 is the bit1 of the printer port...
There's an existing program that compares inputs from 2 databases... When it is true then the door will open. To open the turnstile door, my team leader told me that I need to turn on bit1 of the printer port...
Thanks guys!

Not to sway to far from the topic, but to give Appleman another boost: I bought 3 copies of this book over the years because it walked off from my desk. That has got to be a good recommendation for the book.

Regarding the parallel port issue, most of my port experience has been the serial port - and a lot of what I know about that came from Jan's Serial Port Complete book.

At her site you can download the code from the books and that might be enough to get you going.

Woody Z
http://www.learntoprogramnow.com