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bool RemoveNode(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;
  //»ñµÃ¸ù½áµã
  TiXmlNode *pRootNode = rootElement->ToElement();
  //»ñµÃ¸ù½áµãϵĵÚÒ»¸öÔªËØ
  TiXmlElement *pChild = rootElement->FirstChildElement();
  //»ñµÃ¸ù½áµãϵĵÚÒ»¸ö½Úµã
  TiXmlNode *pTempNode = pChild->ToElement();
  
  rootElement->RemoveChild(pTempNode);
  myDocument.SaveFile(szFileName);
  return true; 
}


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DEVICE=eth0
BOOTPROTO=none
BROADCAST=192.168.1.255
IPADDR=192.168.1.33
NETMASK=255.255.255.0
NETWORK=192.168.1.0
ONBOOT=yes
USERCTL=no
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bool ReadElemnt(string& szFileName)
{
 TiXmlDocument myDocument(szFileName);   
  bool loadOkay = myDocument.LoadFile();
  if(loadOkay == false)
   return false;
 TiXmlElement *rootElement = myDocument.RootElement();
 if(rootEle ......
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