Thanks again Tim,
Now that I have API1.0 & 2.0 working in UI, I have successfully created some of my core classes and will continue to add them as needed, making the process a bit less of a challenge. Thanks again for your advice (and to others as well).
I just hope there won’t be a 3.0! 
While I agree with you, it’s still a shame we’ll then have to stay with all UI names prefixed with “Desktop”, “Mobile” or “Web”. Autocomplete is a disaster with that.
One will type Mob+Tab… 
Then add the Control (whatever) (s)he wants… 
For those who will not understand:
The real “Mob” people will not appreciate this !
Yes, this makes typing at leat 3 letters and the tab key. This might not sound an issue, but (1) when you use them “a lot”, it’s annoying and (2) it was faster in API1.
I understand it doesn’t hurt if you don’t use them much, of course.
What’s a shame is that Xojo missed an opportunity by splitting their GUI frameworks, and bucked the industry trend of uniting GUI frameworks.