Sounds like you want or need some kind of software control system (ie. Source Safe).

Why not just establish some software check in/check out procedures ?

>Hi,
>
> Is there any method (of activex or any other control) that can be fired when the developer (not the end-user) open some class at design time..
>
>VFP6sp5
>
>
>TIA
>
>
>Claudio