OOP Design: controlling multiple (similar) devices

Hi guys,
We have some software that controls different kinds of "widgets." They are identicle in function, but they are from differering vendors and have different drivers and APIs. But here's the tricky part: they may be used by themselves, or in any combination you can think of, up to 3 at a time.
Currently, we use a seperate version of our software for each widget combination, duplicating a massive amount of code- since the only thing we do with each widget is configure it, then read its data (which it continuously takes), then close it when the program is closed. The rest of the software is the same.
I'm wondering what the best approach would be to combine the code. I'm thinking LabVIEW Classes would be a good approach, but, I am new to OOP so I'd like some advice with the design. I've seen the example "Board Testing", that looks interesting and somewhat similar - there they use a different subclass for each board. Analogously I guess I would use a different subclass for each widget. But I'm not sure this is a good idea, since I can have various combinations of the widgets. My main class wire would then have to contain multiple sub-classes.
Any ideas?

pobrepablo1 wrote:
OK, with these comments in mind I've created an Initialize method. "Wrapper" is the name of the driver refnum.
I'm calling this subvi with "initialize" as the argument iff First Call? is true. I think this is the best approach? Or at least simplest for me. I've never used DVRs before (except on a TV... )
This would not be the way that I would implement this. First of all I would have explicit methods for my operations instead of implementing like the old style action engine. Also, I would store the data in the class private data, not in unitialized shift registers. I would consider using a better name than "Wrapper". It is a poor name for your data.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

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Message was edited by: cheonweb

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OOP Design: controllin​g multiple (similar) devices

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OOP Design: controlling multiple (similar) devices