(Activex)XML.rar_ActiveX Visual C++_activex_xml

// RealTimeStockDlg.cpp : implementation file // /********************************************************************************** // // Copyright (C) Dhandapani Ammasai (dammasai@yahoo.com) // // This code can be freely used or modified for non commercial use provided that // this copyright notice and license appear on all copies of the software. // **********************************************************************************/ #include "stdafx.h" #include "RealTimeStock.h" #include "RealTimeStockDlg.h" #include "DlgProxy.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CAboutDlg dialog used for App About class CAboutDlg : public CDialog { public: CAboutDlg(); // Dialog Data //{{AFX_DATA(CAboutDlg) enum { IDD = IDD_ABOUTBOX }; //}}AFX_DATA // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CAboutDlg) protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL // Implementation protected: //{{AFX_MSG(CAboutDlg) //}}AFX_MSG DECLARE_MESSAGE_MAP() }; CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) { //{{AFX_DATA_INIT(CAboutDlg) //}}AFX_DATA_INIT } void CAboutDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CAboutDlg) //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) //{{AFX_MSG_MAP(CAboutDlg) // No message handlers //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CRealTimeStockDlg dialog IMPLEMENT_DYNAMIC(CRealTimeStockDlg, CDialog); CRealTimeStockDlg::CRealTimeStockDlg(CWnd* pParent /*=NULL*/) : CDialog(CRealTimeStockDlg::IDD, pParent) { //{{AFX_DATA_INIT(CRealTimeStockDlg) m_szSymbol = _T(""); m_dblPrice = 0.0; m_lHttpStatus = 0; m_szHttpStatusText = _T(""); m_szErrorText = _T(""); //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); m_pAutoProxy = NULL; } CRealTimeStockDlg::~CRealTimeStockDlg() { // If there is an automation proxy for this dialog, set // its back pointer to this dialog to NULL, so it knows // the dialog has been deleted. if (m_pAutoProxy != NULL) m_pAutoProxy->m_pDialog = NULL; } void CRealTimeStockDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CRealTimeStockDlg) DDX_Text(pDX, IDC_SYMBOL, m_szSymbol); DDX_Text(pDX, IDC_PRICE, m_dblPrice); DDX_Text(pDX, IDC_HTTP_STATUS, m_lHttpStatus); DDX_Text(pDX, IDC_HTTP_STATUS_TEXT, m_szHttpStatusText); DDX_Text(pDX, IDC_RESULT_ERROR, m_szErrorText); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CRealTimeStockDlg, CDialog) //{{AFX_MSG_MAP(CRealTimeStockDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_WM_CLOSE() ON_BN_CLICKED(IDC_GET_PRICE, OnGetPrice) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CRealTimeStockDlg message handlers BOOL CRealTimeStockDlg::OnInitDialog() { CDialog::OnInitDialog(); // Add "About..." menu item to system menu. // IDM_ABOUTBOX must be in the system command range. 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); } } // Set the icon for this dialog. The framework does this automatically // when the application's main window is not a dialog SetIcon(m_hIcon, TRUE); // Set big icon SetIcon(m_hIcon, FALSE); // Set small icon // TODO: Add extra initialization here return TRUE; // return TRUE unless you set the focus to a control } void CRealTimeStockDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } } // If you add a minimize button to your dialog, you will need the code below // to draw the icon. For MFC applications using the document/view model, // this is automatically done for you by the framework. void CRealTimeStockDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); // Center icon in client rectangle 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; // Draw the icon dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } } // The system calls this to obtain the cursor to display while the user drags // the minimized window. HCURSOR CRealTimeStockDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } // Automation servers should not exit when a user closes the UI // if a controller still holds on to one of its objects. These // message handlers make sure that if the proxy is still in use, // then the UI is hidden but the dialog remains around if it // is dismissed. void CRealTimeStockDlg::OnClose() { if (CanExit()) CDialog::OnClose(); } void CRealTimeStockDlg::OnOK() { if (CanExit()) CDialog::OnOK(); } void CRealTimeStockDlg::OnCancel() { if (CanExit()) CDialog::OnCancel(); } BOOL CRealTimeStockDlg::CanExit() { // If the proxy object is still around, then the automation // controller is still holding on to this application. Leave // the dialog around, but hide its UI. if (m_pAutoProxy != NULL) { ShowWindow(SW_HIDE); return FALSE; } return TRUE; } void CRealTimeStockDlg::OnGetPrice() { UpdateData(); if ( !GetStockPriceFromWebServer() ) m_dblPrice = -1; //Indicates error UpdateData(FALSE); } BOOL CRealTimeStockDlg::GetStockPriceFromWebServer() { BOOL bRetVal = FALSE; try { MSXML::IXMLHttpRequestPtr HttpRequest; HRESULT hResult; hResult = HttpRequest.CreateInstance("Microsoft.XMLHTTP"); if ( FAILED(hResult) ) return bRetVal; //error VARIANT vAsync; vAsync.vt = VT_BOOL; vAsync.boolVal = FALSE; VARIANT vUser; vUser.vt = VT_BSTR; vUser.bstrVal = NULL; VARIANT vPassword; vPassword.vt = VT_BSTR; vPassword.bstrVal = NULL; HttpRequest->open("POST", "http://localhost/GetStockPrice.asp", vAsync, vUser, vPassword); HttpRequest->setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); CString szRequest; szRequest = "<RequestStockPrice Symbol='"; szRequest += m_szSymbol; szRequest += "'/>"; VARIANT vRequest; vRequest.vt = VT_BSTR; vRequest.bstrVal = szRequest.AllocSysString(); //Send Http Request HttpRequest->send(vRequest); //Read response and status // m_lHttpStatus = HttpRequest->status; m_szHttpStatusText = (char*)HttpRequest->statusText; _bstr_t bsResponse = HttpRequest->responseText; MSXML::IXMLDOMDocumentPtr XMLDom; hResult = XMLDom.CreateInstance("Microsoft.XMLDOM"); if ( FAILED(hResult) ) { HttpRequest->abort(); return bRetVal; } //Load response in to XML DOM Tree if (!XMLDom->loadXML(bsResponse)) { HttpRequest->abort(); return bRetVal; } //Process the response MSXML::IXMLDOMNodePtr XMLRootResponseNode = XMLDom->selectSingleNode("ResponseStockPrice"); if ( XMLRootResponseNode != NULL ) { MSXML::IXMLDOMNodePtr XMLLastTradeNode = XMLRootResponseNode->selectSingleNode("LastTradePrice"