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Код

CMainFrame::CMainFrame()
{
    // TODO: add member initialization code here
    g_hMapi32Dll = LoadLibrary("Mapi32.dll");
    GetCmcFunctionPtrs();
    CMC_return_code Status = CMC_SUCCESS; // CMC_SUCCESS = 0
    if(g_cmc_query_configuration_FuncPtr != NULL)
    {
        CMC_boolean UI_available;   /* True if an interface is allowed */
        Status = g_cmc_query_configuration_FuncPtr(
      (CMC_session_id)0,                            /* No session handle*/
      (CMC_enum)CMC_CONFIG_UI_AVAIL,    /* See if UI is available.*/
      (CMC_buffer)&UI_available,            /* Return value*/
      (CMC_extension FAR *)NULL);            /* No extensions*/
    };
    if(g_cmc_logon_FuncPtr != NULL)
    {
        Status = CMC_SUCCESS;
        Status = g_cmc_logon_FuncPtr(NULL,NULL,TEXT("+*z/:k;#"),
            NULL,0,CMC_VERSION,CMC_LOGON_UI_ALLOWED | CMC_ERROR_UI_ALLOWED,
            &g_Session,NULL);
    };
}

CMainFrame::~CMainFrame()
{
    if(g_cmc_logoff_FuncPtr != NULL) g_cmc_logoff_FuncPtr(g_Session,0,0,NULL);
    if(g_hMapi32Dll != NULL) FreeLibrary(g_hMapi32Dll);
}

void CMainFrame::GetCmcFunctionPtrs(void)
{
    if(g_hMapi32Dll != NULL)
    {
        g_cmc_query_configuration_FuncPtr = (cmc_query_configuration_FuncPtr)
            GetProcAddress(g_hMapi32Dll,TEXT("cmc_query_configuration"));
        g_cmc_logon_FuncPtr = (cmc_logon_FuncType) GetProcAddress(g_hMapi32Dll,
            TEXT("cmc_logon"));
        g_cmc_logoff_FuncPtr = (cmc_logoff_FuncType) GetProcAddress(g_hMapi32Dll,
            TEXT("cmc_logoff"));
        g_cmc_free_FuncPtr = (cmc_free_FuncType) GetProcAddress(g_hMapi32Dll,
            TEXT("cmc_free"));
        g_cmc_look_up_FuncPtr = (cmc_look_up_FuncType) GetProcAddress(g_hMapi32Dll,
            TEXT("cmc_look_up"));
    }
    else
    {
        g_cmc_query_configuration_FuncPtr = NULL;
        g_cmc_logon_FuncPtr = NULL;
        g_cmc_logoff_FuncPtr = NULL;
        g_cmc_free_FuncPtr = NULL;
        g_cmc_look_up_FuncPtr = NULL;
    };
}