>>>>>>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....
>>
>>Sorry I'm not being very clear today - I go on holiday tomorrow so.....
>>
>>What I need to happen is that the user clicks on a custom scrollbar the scrollbar then calls the necessary code to check if the current record needs to be saved, if it does the user gets a question, depending on the answer the scroll may be stopped leaving the user on the previous record.
>>
>>From the GotFocus I can't seem to stop the scroll happening!
>
>i did not know you could subclass a 'scrollbar' ?
>
>is this scroll bar ...
>part of a grid? or a combobox ... or what?

No I've created a custom control with 3 buttons in it and programmed the functionality of a scroll bar (as in record next/previous/top etc).

Part of my problem is that the user could be trying to do a number of things when they click on my scrollbar and I need to prevent all of them - hence the fact that I want to do the check in the When/GotFocus of the control before the button within performs its code.