[JW Lua] Progress bar doesn't update / Finale screen doesn't update on long scripts

[Jan Angermüller]

Jari,

when running long scripts, Finale (or Windows?) sometimes freezes the 
screen update.

If you look at this video ( https://www.youtube.com/watch?v=0ugMNTzJAPg 
), you see that Finale's screen update freezes after about 15 seconds 
although it internally still changes part scopes and views regularly. 
Finale is still working fine in the background until it finishes (in the 
video at 25 seconds) and finally refreshes the screen.

Do you know of the cause? Is this a general Finale or OS 
multi-thread/multi-tasking problem when running long scripts/functions? 
I know that things like this used to happen in other software as well - 
but this was years ago in Windows XP. All software I use nowadays 
regularly updates the screen during processing.
Would adding another refresh, repaint, update, etc. function to the 
progress bar solve the problem? Its value actually updates during the 
freeze, but it's not visible.

Best,
Jan
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