>Hi,
> Thank you for reply...
> I have put the DOEVENT command in my loop....there are still a few problem..
> 1. if the previous statement before doevent is processing, the event will not fired and it appear like semi click (button down but not clicked)...

Try to change
_VFP.AutoYield = .F.
Probably you can try also different places inside the loop for DOEVENTS

> 2. how could i exit the loop if the click even for the particular button clicked??

I think your button.click() can set some property to .t.,
then inside the loop you check this property after DOEVENTS and EXIT the loop if it is .T.
( button was pressed and it's click() fired)

Nick