#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <tchar.h>

void RefreshDirectory(LPTSTR);
void RefreshTree(LPTSTR);

void WatchDirectory(LPTSTR lpDir)
{
   DWORD dwWaitStatus; 
   HANDLE dwChangeHandles[ 2 ]; 
   TCHAR lpDrive[ 4 ];
   TCHAR lpFile[_MAX_FNAME];
   TCHAR lpExt[_MAX_EXT];

   _tsplitpath(lpDir, lpDrive, NULL, lpFile, lpExt);

   lpDrive[ 2 ] = (TCHAR)'\\';
   lpDrive[ 3 ] = (TCHAR)'\0';
 
// Watch the directory for file creation and deletion. 
 
   dwChangeHandles[ 0 ] = FindFirstChangeNotification( 
      lpDir,                         // directory to watch 
      FALSE,                         // do not watch subtree 
      FILE_NOTIFY_CHANGE_FILE_NAME); // watch file name changes 
 
   if (dwChangeHandles[ 0 ] == INVALID_HANDLE_VALUE) 
      ExitProcess(GetLastError()); 
 
// Watch the subtree for directory creation and deletion. 
 
   dwChangeHandles[ 1 ] = FindFirstChangeNotification( 
      lpDrive,                       // directory to watch 
      TRUE,                          // watch the subtree 
      FILE_NOTIFY_CHANGE_DIR_NAME);  // watch dir. name changes 
 
   if (dwChangeHandles[ 1 ] == INVALID_HANDLE_VALUE) 
      ExitProcess(GetLastError()); 
 
// Change notification is set. Now wait on both notification 
// handles and refresh accordingly. 
 
   while (TRUE) 
   { 
   // Wait for notification.
 
      dwWaitStatus = WaitForMultipleObjects( 2 , dwChangeHandles, 
         FALSE, INFINITE); 
 
      switch (dwWaitStatus) 
      { 
         case WAIT_OBJECT_0: 
 
         // A file was created or deleted in the directory.
         // Refresh this directory and restart the notification.
 
            RefreshDirectory(lpDir); 
            if ( FindNextChangeNotification( 
                    dwChangeHandles[ 0 ]) == FALSE ) 
                ExitProcess(GetLastError()); 
            break; 
 
         case WAIT_OBJECT_0 +  1 : 
 
         // A directory was created or deleted in the subtree.
         // Refresh the tree and restart the notification.
 
            RefreshTree(lpDrive); 
            if (FindNextChangeNotification( 
                    dwChangeHandles[ 1 ]) == FALSE) 
                ExitProcess(GetLastError()); 
            break; 
 
        default: 
            ExitProcess(GetLastError()); 
      }
   }
}

void RefreshDirectory(LPTSTR lpDir)
{
   _tprintf(TEXT("Refresh the directory (%s).\n"), lpDir);
}

void RefreshTree(LPTSTR lpDrive)
{
   _tprintf(TEXT("Refresh the directory tree (%s).\n"), lpDrive);
}