Wince下删除XML文件中的节点

DeleteNode(LPCTSTR szURL1,LPCTSTR szURL2,int i)
{
 IXMLDOMNode *parentNode = NULL;
 IXMLDOMNode *childNode = NULL;
 IXMLDOMNode *oldNode = NULL;
   IXMLDOMNodeList *NodeList = NULL;
 parentNode=FindNode(szURL1);
 NodeList = FindNodeList(szURL2);
 long count = 0;
 NodeList->get_length(&count);
 NodeList->get_item(i,&childNode);
 parentNode->removeChild(childNode,&oldNode);
}