二, 初始化OLE.

BOOL CXmlApp::InitInstance()

{

         AfxOleInit();

…….

}

三, 在對話框中增加一個按鈕,ID為IDC_CREATE,我們在這個按鈕的響應函數(shù)中生成一個xml文件.

void CXmlDlg::OnCreate()

{

         MSXML2::IXMLDOMDocumentPtr pDoc;

         MSXML2::IXMLDOMElementPtr  xmlRoot ;

         //創(chuàng)建DOMDocument對象

         HRESULT hr = pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument30));

         if(!SUCCEEDED(hr))

         {               

                   MessageBox("無法創(chuàng)建DOMDocument對象，請檢查是否安裝了MS XML Parser 運行庫!");

         }

         //根節(jié)點的名稱為china

         pDoc->raw_createElement((_bstr_t)(char*)"china", &xmlRoot);

         pDoc->raw_appendChild(xmlRoot, NULL);

         MSXML2::IXMLDOMElementPtr  childNode ;        

         pDoc->raw_createElement((_bstr_t)(char*)"City", &childNode);

         childNode->Puttext("WuHan");//節(jié)點值

         childNode->setAttribute("population","8,000,000");//屬性名,屬性值

         childNode->setAttribute("area","10000");

         xmlRoot->appendChild(childNode);

         pDoc->raw_createElement((_bstr_t)(char*)"City", &childNode);

         childNode->Puttext("ShangHai");

         childNode->setAttribute("population","12,000,000");

         childNode->setAttribute("area","12000");

         xmlRoot->appendChild(childNode);

         //保存到文件

         //如果不存在就建立,存在就覆蓋

         pDoc->save("f:\\he.xml");

}

不要忘了#import "msxml4.dll" //引入類型庫

四, 再增加一個按鈕,ID為IDC_GET,在這個按鈕的響應函數(shù)中讀取xml文件.

void CXmlDlg::OnGet()

{

         //創(chuàng)建DOMDocument對象

         MSXML2::IXMLDOMDocumentPtr pDoc;

         HRESULT hr = pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument30));

         if(!SUCCEEDED(hr))

         {               

                   MessageBox("無法創(chuàng)建DOMDocument對象，請檢查是否安裝了MS XML Parser 運行庫!");

         }

         //加載文件

         pDoc->load("f:\\he.xml");

         //在樹中查找名為City的節(jié)點,"http://"表示在任意一層查找

         MSXML2::IXMLDOMElementPtr  childNode ;

         childNode = (MSXML2::IXMLDOMElementPtr)(pDoc->selectSingleNode("http://City"));

         //得到節(jié)點類型

         MSXML2::DOMNodeType nodeType;

         childNode->get_nodeType(&nodeType);

         //節(jié)點名稱

         BSTR var;

         CString name;

         childNode->get_nodeName(&var);

         name = (char*)(_bstr_t)var;

         //節(jié)點值

         VARIANT varVal;

         childNode->get_nodeTypedValue(&varVal);

         CString strValue = (char*)(_bstr_t)varVal;

         //節(jié)點屬性,放在鏈表中

         MSXML2::IXMLDOMNamedNodeMapPtr pAttrs = NULL;

         MSXML2::IXMLDOMNodePtr pAttrItem;

         childNode->get_attributes(&pAttrs);

         long nCount ;

         pAttrs->get_length(&nCount);

         for(int i = 0 ; i < nCount ; i++)

         {                

                   pAttrs->get_item(i,&pAttrItem);

                   //我們可以通過函數(shù)get_nodeName,get_nodeTypedValue得到屬性名和屬性值

                   //也可以直接得到

                   CString strAttrName   = (char*)(_bstr_t)pAttrItem->nodeName;

                   CString strAttrValue  = (char*)(_bstr_t)pAttrItem->nodeTypedValue;

         }

}