>>You mean something like timer? Daniel Gramunt sent me his new class, which allows to Cancel form. However, in my particular case the form is extremely complicated with a very deep hierarchy.
>>
>>I think, may be in this particular case I disable escape and then re-enable in Destroy. Though it contradicts with my principle of giving the user most flexibility...
>
>No, I meant that if you have access to the source code, you do something like this:
>
>

>* pseudocode
>SET ESCAPE OFF
>
>* The following might be loop that repeats many times
>local llInterrupted
>do while ...
>   if (user presses ESCAPE)
>      llInterrupted = .T.
>      exit
>   endif
>   * Do the repetitive process here
>enddo
>if llInterrupted
>   ...
>endif
>

I have source code for the BtCrit application forms. I can not touch the classes, on which the form is based.

Anyway, this is not an immediate priority, I just explore this problem to go back, when I have time for this...