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I wrote a piece of code under windows11, VS2019, Platform Toolset= (v142). But I found that record->Reason (USN_RECORD) always returns 0; also, if I delete a file, I monitor that it is a garbled file name with $. For example, if I delete the file "ABC.TXT", I monitor and detect that a file...

thanks a lot. However, I created or deleted some files, then checked the USN_RECORD and found that record->Reason always returned 0. ALSO I DELETE A some FILE just like "ABC.EX", AND I detect USN_RECORD record. The file name it returns is very strange $1a2bd.txt something like this.

As I know the Everything uses the USN log technology, so it can quickly build an index, that is, it can do a fast search. But how can Everything monitor file changes so quickly?