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void CRead_WriteXML::fnReadXML() {    CreadXMLwriteDlg *ReadAndWriteXml;  ReadAndWriteXml = new CreadXMLwriteDlg();  MSXML2::IXMLDOMDocument2Ptr pDoc;     HRESULT  hr = pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument));      pDoc->load("\\Program Files\\ip.xml");   //Load the xml file    MSXML2::IXMLDOMNodeListPtr nodelist=NULL;    nodelist=pDoc->selectNodes("message");  MSXML2::IXMLDOMNodePtr subnode;  long nodecount;  nodelist->get_length(&nodecount);  for(long i=0;i<nodecount;i++)  {                  subnode=nodelist->nextNode()->selectSingleNode((_bstr_t)"IP");           _bstr_t strIp=subnode->Gettext();   int x=GetLastError();   ReadAndWriteXml->m_IpEdit.SetWindowTextW(strIp);   int y=GetLastError();   subnode=nodelist->nextNode()->selectSingleNode((_bstr_t)"Port");           _bstr_t strPort=subnode->Gettext();   ReadAndWriteXml->m_PortEdit.SetWindowTextW(strPort);  }  pDoc->Release();  nodelist->Release(); } void CRead_WriteXML::fnWriteXML() {  CreadXMLwriteDlg *ReadAndWriteXml;  ReadAndWriteXml = new CreadXMLwriteDlg();    MSXML2::IXMLDOMDocument2Ptr pDoc;  MSXML2::IXMLDOMElementPtr  xmlRoot;      HRESULT  hr = pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument));   pDoc->raw_createElement((_bstr_t)(char*)"message", &xmlRoot);          pDoc->raw_appendChild(xmlRoot,NULL);        MSXML2::IXMLDOMElementPtr  childNode;         pDoc->raw_createElement((_bstr_t)(char*)"IP",&childNode);  _bstr_t   bstrIp;  CString  strIp;  ReadAndWriteXml->m_IpEdit.GetWindowTextW(strIp);  bstrIp = strIp.AllocSysString(); //Convert  CString to _bstr_t  childNode->Puttext(bstrIp);      xmlRoot->appendChild(childNode);         pDoc->raw_save(_variant_t("\\Program Files\\ip.xml"));  pDoc->raw_createElement((_bstr_t)(char*)"Port",&childNode);  _bstr_t   bstrPort;  CString  strPort;  ReadAndWriteXml->m_PortEdit.GetWindowTextW(strPort);  bstrPort = strPort.AllocSysString();    //Convert CString to _bstr_t  childNode->Puttext(bstrPort);        xmlRoot->appendChild(childNode);       pDoc->save("\\Program Files\\ip.xml");  //Save the xml file  pDoc->Release();  xmlRoot->Release();  childNode->Release(); } °üº¬µÄÍ·Îļþ#include <comutil.h>                   #import<msxml3.dll>named_guids                    using namespace MSXML2; »¹Óгõʼ»¯º¯Êý:AfxOleInit(); Ï£ÍûÄܶÔÄãÓÐËù°ïÖú.