> > Did you have a wait?  With no wait, I don't think you can get 
> > parallel execution.
> 
> Well, I am glad that you tried to prevent parallel execution, 

What I was trying to see that, since PowerPro is single threaded, it 
will always run the hookwindowevent to completion until there is a 
wait in that script.  So I cannot see how there could be reentry of 
this script without a wait within it.




> for trouble, especially trouble in the form of race conditions. 

But can there be race conditions with single threading (and no 
waits).

 
I looked at your script and don't understand why it would fail.  It 
is very likely there some bug in the hookwindowevents processing 
that I do not understand and cannot duplicate.

>>              if (win.height(arg(2)) != &(yscreen)) do

Why &(screen)?








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