VC编写的OPC客户端程序源代码（异步通讯）

//--------------------------------------------------------- // OPC Custom 2.0 Sample // Asynchronous IO with MFC and ATL // (c) Siemens AG 2000 //--------------------------------------------------------- // // OPCDA_AsyncDlg.cpp : implementation file of the dialog class // all OPC calls are located here // #include "stdafx.h" #include "pre_opc.h" // for OPC: include MFC, ATL and OPC header files #include "OPCDA_Async.h" // include class declaration for application class #include "OPCDA_AsyncDlg.h" // include class declaration of dialog class #include "Callback.h" // for OPC: include class declaration fpr this callback class #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif //// Used by GetErrorString; Language code //// #define LOCALE_ID 0x409 // Code 0x409 = ENGLISH const LPWSTR szItemID0 = L"S7:[DEMO]MB1"; // this item must be readable and writeablein this sample const LPWSTR szItemID1 = L"S7:[DEMO]MW3"; // this item must be readable in this sample const DWORD vtDataTypeItem0 = VT_EMPTY; // canonical datatype const DWORD vtDataTypeItem1 = VT_UI2; // unsigned integer 2 Bytes ///////////////////////////////////////////////////////////////////////////// // 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() ///////////////////////////////////////////////////////////////////////////// // COPCDA_AsyncDlg dialog // // class constructor: initialisation of dialog variables // COPCDA_AsyncDlg::COPCDA_AsyncDlg(CWnd* pParent /*=NULL*/) : CDialog(COPCDA_AsyncDlg::IDD, pParent) { //{{AFX_DATA_INIT(COPCDA_AsyncDlg) m_ReadValue = 0; m_QualityRead = _T(""); m_TimeStampRead = _T(""); m_WriteResult = _T(""); m_WriteVal = 0; m_bChkActivateGroup = FALSE; m_Quality0 = _T(""); m_TimeStamp0 = _T(""); m_Value0 = _T(""); m_Quality1 = _T(""); m_TimeStamp1 = _T(""); m_Value1 = _T(""); m_szItemID0 = szItemID0; //_T(""); m_szItemID1 = szItemID1; // _T(""); //}}AFX_DATA_INIT m_hIcon = AfxGetApp()->LoadIcon(IDI_ICONOPC); } // // MFC Dialog Data Exchange handler: Maps control IDs to variables // void COPCDA_AsyncDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(COPCDA_AsyncDlg) DDX_Control(pDX, IDC_CHECK_ACTIVATEGROUP, m_CtrlChkActive); DDX_Control(pDX, IDC_BUTTON_WRITE, m_CtrlWrite); DDX_Control(pDX, IDC_BUTTON_STOP, m_CtrlStop); DDX_Control(pDX, IDC_BUTTON_START, m_CtrlStart); DDX_Control(pDX, IDC_BUTTON_READ, m_CtrlRead); DDX_Text(pDX, IDC_EDIT_READVAL, m_ReadValue); DDX_Text(pDX, IDC_EDIT_QUALITY, m_QualityRead); DDX_Text(pDX, IDC_EDIT_TIMESTAMP, m_TimeStampRead); DDX_Text(pDX, IDC_EDIT_WRITERESULT, m_WriteResult); DDX_Text(pDX, IDC_EDIT_WRITEVAL, m_WriteVal); DDX_Check(pDX, IDC_CHECK_ACTIVATEGROUP, m_bChkActivateGroup); DDX_Text(pDX, IDC_EDIT_ONDATA_QU1, m_Quality0); DDX_Text(pDX, IDC_EDIT_ONDATA_TIMEST1, m_TimeStamp0); DDX_Text(pDX, IDC_EDIT_ONDATA_VAL1, m_Value0); DDX_Text(pDX, IDC_EDIT_ONDATA_QU2, m_Quality1); DDX_Text(pDX, IDC_EDIT_ONDATA_TIMEST2, m_TimeStamp1); DDX_Text(pDX, IDC_EDIT_ONDATA_VAL2, m_Value1); DDX_Text(pDX, IDC_STATIC_ITEMID0, m_szItemID0); DDX_Text(pDX, IDC_STATIC_ITEMID1, m_szItemID1); //}}AFX_DATA_MAP } // // MFC Message map: maps control ID to handler routines // BEGIN_MESSAGE_MAP(COPCDA_AsyncDlg, CDialog) //{{AFX_MSG_MAP(COPCDA_AsyncDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC_BUTTON_START, OnButtonStart) ON_BN_CLICKED(IDC_BUTTON_READ, OnButtonRead) ON_BN_CLICKED(IDC_BUTTON_WRITE, OnButtonWrite) ON_BN_CLICKED(IDC_BUTTON_STOP, OnButtonStop) ON_BN_CLICKED(IDC_CHECK_ACTIVATEGROUP, OnCheckActivategroup) ON_WM_DESTROY() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // COPCDA_AsyncDlg message handlers // // // OnInitDialog: being called, when dialog is opened the first time // BOOL COPCDA_AsyncDlg::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); } } SetIcon(m_hIcon, TRUE); // Set big icon SetIcon(m_hIcon, FALSE); // Set small icon // for OPC: remainder of this method // initialise interface pointer m_pIOPCServer = NULL; m_pIOPCItemMgt = NULL; m_pIOPCGroupStateMgt = NULL; m_dwAdvise = 0; // Disable Buttons until Sample is started to avoid operation mistakes m_CtrlStop.EnableWindow(FALSE); m_CtrlRead.EnableWindow(FALSE); m_CtrlWrite.EnableWindow(FALSE); m_CtrlChkActive.EnableWindow(FALSE); return TRUE; } // // OnSysCommand: being called, when system command "about" has been invoked // void COPCDA_AsyncDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } } // // OnPaint: MFC handler, being called, when Windows or an application makes a // request to repaint a portion of an application�s window // void COPCDA_AsyncDlg::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(); } } HCURSOR COPCDA_AsyncDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } // // OnButtonStart: handler is being called, when button "Start Sample" has been pressed // // This handler is for OPC: // - initializes COM // - creates an OPC server object // - adds an OPC group // - adds 2 items to this group // - establishes the callback void COPCDA_AsyncDlg::OnButtonStart() { HRESULT r1; CLSID clsid; LONG TimeBias = 0; FLOAT PercentDeadband = 0.0; DWORD RevisedUpdateRate; LPWSTR ErrorStr1,ErrorStr2; CString szErrorText; m_pItemResult = NULL; // Initialize the COM library r1 = CoInitialize(NULL); if (r1 != S_OK) { if (r1 == S_FALSE) { MessageBox("COM Library already initialized", "Error CoInitialize()", MB_OK+MB_ICONEXCLAMATION); } else { szErrorText.Format("Initialisation of COM Library failed. ErrorCode= %4x", r1); MessageBox(szErrorText,"Error CoInitialize()", MB_OK+MB_ICONERROR); SendMessage(WM_CLOSE); return; } } // Given a ProgID, this looks up the associated CLSID in the re