>>Sergey sent an answer to me, pointing to a MSKB article - in this same thread, I >think - with an interesting workaround. I already pointed to another alternative: >DoEvents only every 100 records or something.
>
>What's your meaning? Will I use other methods ?
>How do you solve it such as data read from comport then the user must input at the same time ?

Normally, while VFP processes many commands (usually in a loop, like DO WHILE), it doesn't react to user input.

If you include DoEvents somewhere, e.g.:

scan
  * Do something with records
  DoEvents
endscan

DoEvents will allow VFP to react, for instance, to a button click.

I hope I am clear enough this time. Otherwise, please feel free to ask back.

Hilmar.