How to store the object of an IE that's not created by the script, into a variable?

[Servant]

How to store the object or the handler of a current focused window of an Internet Explorer that's not created by an AutoIt v3 script, into a variable?

Edited February 21, 2014 by Servant

[JohnOne]

example of what you mean exactly?

[water]

I suggest to use function _IEAttach.