It seems there is no way on Windows to notify you that a file (handle) has been closed, as there might be multiple handles open to the same file. I guess the closest you'll get is Re: how to permanently monitor a directory, which will notify you of "no changes" after a certain amount of time has passed, in addition to other changes.

In reply to Re: monitoring file changes (win32) by Corion
in thread monitoring file changes (win32) by rgcosma

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