Notification when a window is subclassed

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Is there a way for an application to be notified when one of it's
windows is being subclassed?

The scenario am dealing with is that I subclass a window to take a
crack at a few messages. But the implementation of one of the messages
that am not interested in and hence destined for the OriginalWndProc
is seeming to subclass the Window once again. I am kinda lost at this
point, because neither am I getting those select messages anymore nor
am I being notified that the Window was further subclassed after I
did.

Any suggestions?
Ranjit
.

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