c++ 递归查找指定类型的文件。

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);
}
else
{
CString strFilePath = finder.GetFilePath();
int flag = strFilePath.ReverseFind(_T('.'));
if(-1 != flag)
{
if(0 == strFilePath.Mid(flag).Compare(_T(".txt")))
{
DeleteFile(strFilePath);
}
}
}
}

finder.Close();
}

void PrintDirs()
{
Recurse(_T("F://"));
}