>>Ok, so this makes my scenario consistent: for CommandButton, Checkbox,... Click always triggers Valid, which is always followed by a second When.
>>What do you think, is this a bug, or is it a bad design choice caused by trying to fit Valid in the event list of CommandButton, Checkbox,... ?
>
>A bad design.
>Honestly, the whole design of the visual events of VFP is very inaccurate
>
>>Do we need Valid for a CommandButton in VFP? BTW, I still don't understand what do you mean when you say that return .F. in Valid is ignored?
>>
>
>On a textbox RETURN .F. in Valid, stop the lostfocus process ( true 95% )
>and RETURN someobject set the focus into someobject.
>On a checkbox RETURN someobject work, but RETURN .F. doesn't.

Oh, I see now...
I guess eliminating the Valid event for CommandButton, Checkbox,... would make the design easier.