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John Brandt wrote:
They can find each other because they are registered as an open application
window with a number or code assigned to it. In windows, it is generally
referred to as hWnd. That is the handle to the unique process/thread that
controls the window being displayed. Another windows program can search
through the list of open handles until it finds the one that has the correct
title or some other attribute it is looking for in order to interact with
it.

Hmm. Interesting. Naturally, not being a WinDoze programmer, I wouldn't know about these things.


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