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bool InstertNode(string& szFileName)
{
 
  TiXmlDocument myDocument(szFileName);   
   bool loadOkay = myDocument.LoadFile();
   if(loadOkay == false)
    return false;
   //»ñµÃ¸ùÔªËØ
  TiXmlElement *rootElement = myDocument.RootElement();
  if(rootElement == NULL)
   return false;
  
  //´´½¨Ò»¸öPersonÔªËØ²¢Á¬½Ó¡£
  TiXmlElement *PersonElement = new TiXmlElement("Person");
  rootElement->LinkEndChild(PersonElement);  
  //ÉèÖÃPersonÔªËØµÄÊôÐÔ¡£
    PersonElement->SetAttribute("ID", "3");
    //´´½¨nameÔªËØ¡¢ageÔªËØ²¢Á¬½Ó¡£
    TiXmlElement *NameElement = new TiXmlElement("name");
    TiXmlElement *AgeElement = new TiXmlElement("age");
    PersonElement->LinkEndChild(NameElement);
    PersonElement->LinkEndChild(AgeElement);
    //ÉèÖÃnameÔªËØºÍageÔªËØµÄÄÚÈݲ¢Á¬½Ó¡£
    TiXmlText *NameContent = new TiXmlText("ÕÔÁÁÁÁ");
    TiXmlText *AgeContent = new TiXmlText("30");
    NameElement->LinkEndChild(NameContent);
    AgeElement->LinkEndChild(AgeContent);
  
  //±£´æ
  myDocument.SaveFile(szFileName);
  return true;
}
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