Display a form with a Cancel button before starting your loop and insert a DOEVENTS in your loop to let VFP a chance to trap the click event. You might want to run DOEVENTS every 10 or 100 iterations, because it will slow down too much your application.

HTH

---

>From the one running process (Eg. do while loop), Can i exit on pressing Cancel button? I can do it for Escape button using InKey() function. But i want to do it by pressing any button.