>>>>Let say, some custom form property holds object reference, e.g. form contains pageframe and each page activate event fires:
>>>>Thisform.ActivePageObject=This && surely, it's just an example, it can be buttons, textboxes etc , even exteranl objects
>>>>Now, if you will not issue This.ActivePageObject=.NULL. in Form.Destroy event, you cannot release the form and close button is grayed out.
>>>
>>>Thanks, Ed. That's what I thought you were saying. I just haven't run into this one and wanted to be sure.
>>
>>This behavior only surfaces when the user clicks on the close button and a reference is outstanding. The button will not gray itself.
>
>It will also gray out if some code fires
>RELEASE WINDOW "formname"
>unsuccessfully trying to close the form

or.. (memory jogging now) if there is an outstanding READ EVENTS without a CLEAR EVENTS, and the form tries to close...