http://lunarfrog.com/blog/filesystem-change-notifications
Use CreateFileQueryWithOptions to add file monitor(win32 use file watcher).
* By default it FolderDepth is Shallow(root folder only), Deep will observe sub folder
* Only notify file changes, but unable to detact the changed file, nor even then content changed.
* Will get notification after resume from background
* Can't get any notification if App is killed.
* GetFileAync in notification event will only get all files in the folder, not altered files.
So it's really a chicken‘ ribs ...
不明白微软为什么要搞这么多半成品的东西，非常恶心