>>>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..
>
>
>I guess that the real problem is that I can only test if they can access the control within the control ie what should be the When method.
>
>Any thoughts?

so when the user alters the contents of the control ... you would want to disable it ?

try the
'interactivechange' event of the control....