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Meet Lilah Kring, the newest member of the Kring family: Born Monday, 10/5/2009, at 11:30 PM GMT -7 I can't guarantee she'll use LabVIEW, but I'll do my best [insert object-oriented programming puns, here]

Is there some reason you can't use an Automation reference and Variant To Data? ActiveXVariantToAutomationRefnum.vi

To join your XControls event registration with some other event registration (ie whatever else the user may have), the use of your XControl could always bundle the two registrations together:

I wouldn't be to sure about that.. In my understanding the queue exists at the event registration refnum. This is also illustrated by the LV help that states you shouldn't wire an event registration ref to more than one event structure to prevent race condition situations. So in order to have multiple observers observe you, you have to either publish the event refnum or a unique event registration ref for every observer. Practical in your XControl (or class or whatever code module you want to make observable) you have a finite number of possible dynamic events that you can send and they all serve their own purpose. I'd simply put them all in an event-ref cluster inside my internal data structure. No need for putting them in arrays imho. (It would be the same as wanting to stuff several different clusters in an array... which ofcouse is possible using variants classes.. )

Any time you get into the habit of taking on someone else's work load the entire company takes on that habit. And bad habits are hard to break. You'll end up being resentful and having too much to do. I would take a bullet for most of my coworkers, but I refuse to cover for anyone who is lazy or takes advantage of the team.