>>How do I interrupt a timer event and/or loop running in a form, by using a command button?
>
>You can stop a timer event from firing by setting it's Interval to zero. The loop will require more work - not sure if you can use ESCape, I would normally doing it by checking INKEY() inside the loop.
>
>Hope this helps.

Hi Houston,

I found, that InKey in loops slow down the process.
I use this technique:

save escape settings in local variables
private lStop
lStop=.f.
set escape on
on escape lStop=.t.
scan
  if lStop
     exit
  endif
  ** Some work + displaying termometr
endscan
restore old escape settings