>Thanks Thomas,
>
>Have you link to the msdn? There is also an easy way to prevent popups in VFP but popups are opened (visible) first. Even they are visible a split second it would be better to prevent/close popups before they are visible. In C and VB there is a easy way to do it with SetWindowsHookEx function but it needs callbacks and can't be used with VFP.
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Arto,

Did you try vfp.fll - Callback for vfp File #20453 ?