How to detect a "closed object"

[Rex Swain]

When closing an APL+Win application, I sometimes get an error like this

⎕WI ACTION ERROR: Cannot invoke method "AutoFit" for closed object

'lv' ⎕wi 'AutoFit' 'header' 'all' 

In this case, 'lv' is a Listview object.  But sometimes it happens to other classes. 

Question:  How can I query beforehand an object is "closed"?  

I thought the 'opened' property might be a clue, but it does no seem to be (it returns 1).  

Any suggestions?

[Ajay Askoolum]

I haven't used these controls in years - so take this with a pinch of salt.

The 'opened' property is read only; it changes to 0 after executing the 'Close' method after which I can create your error. 

The only suggestion I have is that you execute your code inside an onOpen event..