www.pudn.com > COMProgrammingExample.rar > TestDlg.cpp
// TestDlg.cpp : implementation file // #include "stdafx.h" #include "comdef.h" #include "Tester.h" #include "TestDlg.h" #include "IServer\IWzd.h" #include "guids.h" #include#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() ///////////////////////////////////////////////////////////////////////////// // CTestDlg dialog CTestDlg::CTestDlg(CWnd* pParent /*=NULL*/) : CDialog(CTestDlg::IDD, pParent) { //{{AFX_DATA_INIT(CTestDlg) // NOTE: the ClassWizard will add member initialization here //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CTestDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CTestDlg) // NOTE: the ClassWizard will add DDX and DDV calls here //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CTestDlg, CDialog) //{{AFX_MSG_MAP(CTestDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC_BUTTON1, OnTest) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CTestDlg message handlers BOOL CTestDlg::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 CTestDlg::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 CTestDlg::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 CTestDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CTestDlg::OnTest() { ////////////////////////////////////////////////////////////////////////// //////////////// With ::CoCreateInstance() /////////////////////////// ////////////////////////////////////////////////////////////////////////// IWzd *iWzd=NULL; HRESULT hr=::CoCreateInstance( CLSID_IWzdSrv, // name of dll to load NULL, // aggregated COM object (none) CLSCTX_INPROC_SERVER,// use dll IID_IWzd, // class to create and object of (LPVOID*) &iWzd); // returned object pointer if (FAILED(hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); return; } iWzd->Release(); ////////////////////////////////////////////////////////////////////////// //////////////// With ::CoGetClassObject() /////////////////////////// ////////////////////////////////////////////////////////////////////////// // (this is what CoCreateInstance() does internally-- // sometimes useful for diagnostics or other custom creation) // load DLL/EXE and get a pointer to its class factory IClassFactory *pCF=NULL; hr=::CoGetClassObject( CLSID_IWzdSrv, // name of dll to load CLSCTX_INPROC_SERVER,// use dll NULL, // for DCOM, a COSERVERINFO structure that id's the remote server // more typically set using OLEView IID_IClassFactory, // the class factory interface (all COM DLL/EXE's must have this interface) (LPVOID*)&pCF); if (FAILED(hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); return; } // ask class factory to creat the class hr = pCF->CreateInstance( NULL, // aggregated COM object (none) IID_IWzd, // class to create and object of (LPVOID*) &iWzd); // returned object pointer if (FAILED(hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); return; } pCF->Release(); iWzd->Release(); ////////////////////////////////////////////////////////////////////////// //////////////// With ::CoCreateInstanceEx() /////////////////////////// ////////////////////////////////////////////////////////////////////////// // creates multiple COM classes at once from the same dll/exe // setup MULTI_QI structure with all the classes to create MULTI_QI results[3]; memset(results,0,sizeof(results)); results[0].pIID=&IID_IWzd; // class to create results[1].pIID=&IID_IWzd; results[2].pIID=&IID_IWzd; // make the call hr =::CoCreateInstanceEx( CLSID_IWzdSrv, // name of dll to load NULL, // aggregated COM object (none) CLSCTX_INPROC_SERVER,// use dll NULL, // for DCOM, a COSERVERINFO structure that id's the remote server // more typically set using OLEView 3, // number of MULTI_QI structures in results (MULTI_QI*)&results); // array of MULTI_QI structures if (FAILED(hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); return; } for (int i=0;i<3;i++) { if (FAILED(results[i].hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); } } IWzd *iWzd1=(IWzd*)results[0].pItf; IWzd *iWzd2=(IWzd*)results[1].pItf; IWzd *iWzd3=(IWzd*)results[2].pItf; iWzd1->Release(); iWzd2->Release(); iWzd3->Release(); }