VC操作XML文件的示例

// XML_TestDlg.cpp : 实现文件 // #include "stdafx.h" #include "XML_Test.h" #include "XML_TestDlg.h" #include "msxml.h" #include ".\xml_testdlg.h" #ifdef _DEBUG #define new DEBUG_NEW #endif // 用于应用程序“关于”菜单项的 CAboutDlg 对话框 class CAboutDlg : public CDialog { public: CAboutDlg(); // 对话框数据 enum { IDD = IDD_ABOUTBOX }; protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV 支持 // 实现 protected: DECLARE_MESSAGE_MAP() }; CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) { } void CAboutDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); } BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) END_MESSAGE_MAP() // CXML_TestDlg 对话框 CXML_TestDlg::CXML_TestDlg(CWnd* pParent /*=NULL*/) : CDialog(CXML_TestDlg::IDD, pParent) , m_strDocName(_T("")) , m_strDocContents(_T("")) , m_bTreeView(FALSE) { m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CXML_TestDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); DDX_Text(pDX, IDC_STC_DOC_NAME, m_strDocName); DDX_Text(pDX, IDC_EDT_DOC_CONTENTS, m_strDocContents); DDX_Check(pDX, IDC_CHECK1, m_bTreeView); DDX_Control(pDX, IDC_TREE_CONTENTS, m_TreeContents); } BEGIN_MESSAGE_MAP(CXML_TestDlg, CDialog) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() //}}AFX_MSG_MAP ON_BN_CLICKED(IDC_BUTTON1, OnBnClickedButton1) ON_BN_CLICKED(IDC_CHECK1, OnBnClickedCheck1) END_MESSAGE_MAP() // CXML_TestDlg 消息处理程序 BOOL CXML_TestDlg::OnInitDialog() { CDialog::OnInitDialog(); // 将\“关于...\”菜单项添加到系统菜单中。 // IDM_ABOUTBOX 必须在系统命令范围内。 ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE); if (pSysMenu != NULL) { CString strAboutMenu; strAboutMenu.LoadString(IDS_ABOUTBOX); if (!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); } } // 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动 // 执行此操作 SetIcon(m_hIcon, TRUE); // 设置大图标 SetIcon(m_hIcon, FALSE); // 设置小图标 // TODO: 在此添加额外的初始化代码 ::OleInitialize(NULL); HRESULT hr = m_plDomDocument.CreateInstance(MSXML::CLSID_DOMDocument); if(FAILED(hr)) { _com_error er(hr); AfxMessageBox(er.ErrorMessage()); EndDialog(1); } return TRUE; // 除非设置了控件的焦点，否则返回 TRUE } void CXML_TestDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } } // 如果向对话框添加最小化按钮，则需要下面的代码 // 来绘制该图标。对于使用文档/视图模型的 MFC 应用程序， // 这将由框架自动完成。 void CXML_TestDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // 用于绘制的设备上下文 SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0); // 使图标在工作矩形中居中 int cxIcon = GetSystemMetrics(SM_CXICON); int cyIcon = GetSystemMetrics(SM_CYICON); CRect rect; GetClientRect(&rect); int x = (rect.Width() - cxIcon + 1) / 2; int y = (rect.Height() - cyIcon + 1) / 2; // 绘制图标 dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } } //当用户拖动最小化窗口时系统调用此函数取得光标显示。 HCURSOR CXML_TestDlg::OnQueryDragIcon() { return static_cast<HCURSOR>(m_hIcon); } void CXML_TestDlg::OnBnClickedButton1() { CFileDialog fileDlg(TRUE); if(IDOK == fileDlg.DoModal()) { m_strDocName = fileDlg.GetPathName(); m_strDocContents = "Empty Document"; m_TreeContents.DeleteAllItems(); UpdateData(FALSE); CString strFileName(m_strDocName); _bstr_t bstrFileName; bstrFileName = strFileName.AllocSysString(); variant_t vResult; vResult = m_plDomDocument->load(bstrFileName); if(((bool)vResult) == TRUE) { _bstr_t bstrDocContents = m_plDomDocument->xml; m_strDocContents = (LPCTSTR)bstrDocContents; m_pDocRoot = m_plDomDocument->documentElement; DisplayChildren(TVI_ROOT, m_pDocRoot); if(m_TreeContents.GetCount() == 0) m_TreeContents.InsertItem("Empty Document"); } else { m_strDocContents = "Document FAILED to load!"; m_TreeContents.InsertItem("Document FAILED to load!"); } UpdateData(FALSE); } } void CXML_TestDlg::OnBnClickedCheck1() { UpdateData(TRUE); if(m_bTreeView) { GetDlgItem(IDC_EDT_DOC_CONTENTS)->ShowWindow(SW_HIDE); m_TreeContents.ShowWindow(SW_SHOW); } else { m_TreeContents.ShowWindow(SW_HIDE); GetDlgItem(IDC_EDT_DOC_CONTENTS)->ShowWindow(SW_SHOW); } } void CXML_TestDlg::DisplayChildren(HTREEITEM hParent, MSXML::IXMLDOMNodePtr pParent) { HTREEITEM hItem = DisplayChild(hParent, pParent); for(MSXML::IXMLDOMNodePtr pChild = pParent->firstChild; pChild != NULL; pChild = pChild->nextSibling) DisplayChildren(hItem, pChild); } HTREEITEM CXML_TestDlg::DisplayChild(HTREEITEM hParent, MSXML::IXMLDOMNodePtr pChild) { CString strElement; if(MSXML::NODE_TEXT == pChild->nodeType) strElement = (LPCTSTR)pChild->text; else strElement = (LPCTSTR)pChild->nodeName; return m_TreeContents.InsertItem(strElement, hParent); }