ff.FindNextFile一个文件没读出

CFileFind ff;
    if (dir.Right(1) != "\\")
{
    dir += "\\";
}
    dir+="*.*";
    BOOL bRes = ff.FindFile(dir);
    while (bRes)
{
    bRes = ff.FindNextFile();
    if (bRes != 0)
{   
    if(ff.IsDirectory()&& !ff.IsDots())
    {
        CString path = ff.GetFilePath();
        TraverseDir(path,vec);
    }
    else if (!ff.IsDirectory() && !ff.IsDots())
    {
        CString name=ff.GetFileName();
        CString path = ff.GetFilePath();
        vec.push_back(path);
        }
    }
}

MSDN上有现成的例子代码，可以参考一下：

 void Recurse(LPCTSTR pstr)
{
   CFileFind finder;

   // build a string with wildcards
   CString strWildcard(pstr);
   strWildcard += _T("\\*.*");

   // start working for files
   BOOL bWorking = finder.FindFile(strWildcard);

   while (bWorking)
   {
      bWorking = finder.FindNextFile();

      // skip . and .. files; otherwise, we'd
      // recur infinitely!

      if (finder.IsDots())
         continue;

      // if it's a directory, recursively search it

      if (finder.IsDirectory())
      {
         CString str = finder.GetFilePath();
         TRACE(_T("%s\n"), (LPCTSTR)str);
         Recurse(str);
      }
   }

   finder.Close();
}

void PrintDirs()
{
   Recurse(_T("C:"));
}

单步调试一下，先看你在什么位置出错了

已经找到问题了 ，将if (bRes != 0)删掉就行了