Hi jbv,

Data processing doesn't slow down because of screen redraws. If a repeat loop like yours needs a lot of CPU time, it will take this and less time will be left for screen updates.

The lock screen and unlock screen commands themselves also take some time. There's a good chance that a smart rewrite of your repeat loop without lock and unlock commands will be much faster than a version with these commands.

This should work:

  lock screen
  repeat 20000 times
    -- do a lot of things that
    -- don't affect field contents
    -- ...
    -- now we're at the end of the loop
    put myVar into fld myVar
    -- give the GUI time to update
    wait 0 millisecs with messages
  end repeat

The problem isn't that the screen doesn't unlock, but the problem is that your repeat loop doesn't give the engine any time to update the GUI.

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On 8/27/2014 13:25, j...@souslelogo.com wrote:
Hi list

I have the following loop :

   lock screen
   repeat 20000 times
     -- do a lot of things
     unlock screen
     put myVar into fld myVar
     lock screen
   end repeat

The purpose is to lock the screen so that the heavy data
processing inside the loop isn't slowed down, but also to
display the content of myVar at each iteration of the loop.
But the content of the fld doesn't refresh while the loop runs,
only when the loop is over... I used to do that with HC, MC
and earlier versions of Rev and it used to work...
I'm on OSX 10.5.5 and LC 6.5.2
Any idea ?

Thanks
jbv



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