>Hi everyone,
>
>I have a custom Control that I need to prevent access to under certain circumstances, however the control only appears to have a GotFocus and LostFocus not a When or Valid.
>
>Is there some way to reproduce the behaviour of the When method?
>
>Thanks in advance

what about setting the controls 'enabled' property to 'FALSE'?
The user will not have 'access' to the control.
When the 'certain circumstance' occurs...

THISFORM.Control.Enabled = .f.

or

THISFORM.Control.ReadONly = .t. is another way to limit user access to a control.....


i hope this helps...
if it does not...
... get more specific with your question..