I believe this is what's happening. I read something recently from Raymond Chen that it works like: 1. Open file with the delete flag 2. Call a function to set

I believe this is what's happening. I read something recently from Raymond Chen that it works like: 1. Open file with the delete flag 2. Call a function to set the new file information 3. Close the handle. The signal that a file was renamed happens in step 2, and that signal/event is what many applications subscribe to. Explorer will wait until the rename is fully completed with the handle closed before showing the change.