Hi All,

4D v17 R5 (Mac and Windows single user standalone)

I have a list box that needs to be built and available before the calculation 
is complete. In this case I have some searches looking for particular 
conditions and when found add them to the listbox. They could easily take a few 
seconds to I’m guessing a  minute or more. The searching could span 50-60 sub 
searches within a 100 years of daily data (Think daily stock market data but 
it’s not for the stock market).

So I would like a strategy:

- so that list box remains available as it’s being built.

- the screen is not frozen as it’s being built.

- The list box fills as each row is found/added and can be seen rebuilding. 

I’ve seen this kind of thing in a windows app (not 4D) and I’d like to emulate 
the behavior.

I need a strategy I’m guessing that involves another process which knows how to 
communicate back to this form/listbox. Is this where workers could be helpful?

Does anyone have some snippets of code I could see to visualize the process?

Appreciate,
John…


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