檔案監控 FileWatcher

CDirectoryChangeWatcher
http://www.codeproject.com/KB/files/directorychangewatcher.aspx

ReadDirectoryChangesW Function
http://msdn.microsoft.com/en-us/library/aa365465(VS.85).aspx

Obtaining Directory Change Notifications
http://msdn.microsoft.com/en-us/library/aa365261%28VS.85%29.aspx

FindFirstChangeNotification Function
http://msdn.microsoft.com/en-us/library/aa364417(VS.85).aspx

FILE_NOTIFY_INFORMATION Structure
http://msdn.microsoft.com/en-us/library/aa364391(VS.85).aspx