<map>                    
  <道路 id="">
    <高速公路     id="">
      <a1  id="" pointX="20" pointY="20" />
      <a2  id="" pointX="30" pointY="30" />
      <a3  id="" pointX="40" pointY="40" />
      <a4  id="" pointX="50" pointY="50" />
      <a5  id="" pointX="60" pointY="60" />
      <a6  id="" pointX="70" pointY="70" />
      <a7  id="" pointX="80" pointY="80" />
      <a8  id="" pointX="90" pointY="90" />
    </高速公路>
  </道路>
</map>用CMarkup查找节点时,使用m_xml.FindChildElem("a1")必须指定节点名,如果想遍历它,如何实现?
最终目标是找出pointX,pointY的所有值