"ReadDirectoryChangesW" And completition keys

Hi,


Could anyone help me with the following problem:

I try to listen some file activity in a directory.


I use "CreateIoCompletionPort" to create a completition port.

Using that port I register myself with "ReadDirectoryChangesW" to receive notification in case of file activity.

I get the notification using: "GetQueuedCompletionStatus"


Why do I always get 2 notifications if a file is was chaged. ?

When registering "ReadDirectoryChangesW" I use only: FILE_NOTIFY_CHANGE_LAST_WRITE.


Thanks in Advance,

Corneliu.