C++ CComSafeArray::GetCount方法代码示例

void lvDCOMInterface::getLabviewValue(const char* param, T* value, size_t nElements, size_t& nIn)
{
	if (value == NULL)
	{
		throw std::runtime_error("getLabviewValue failed (NULL)");
	}
	if (param == NULL || *param == '\0')
	{
		throw std::runtime_error("getLabviewValue: param is NULL");
	}
	CComVariant v;
	char vi_name_xpath[MAX_PATH_LEN], control_name_xpath[MAX_PATH_LEN];
	_snprintf(vi_name_xpath, sizeof(vi_name_xpath), "/lvinput/section[@name='%s']/vi/@path", m_configSection.c_str());
	_snprintf(control_name_xpath, sizeof(control_name_xpath), "/lvinput/section[@name='%s']/vi/param[@name='%s']/read/@target", m_configSection.c_str(), param);
	CComBSTR vi_name(doPath(vi_name_xpath).c_str());
	CComBSTR control_name(doXPATH(control_name_xpath).c_str());
	if (vi_name.Length() == 0 || control_name.Length() == 0)
	{
		throw std::runtime_error("getLabviewValue: vi or control is NULL");
	}
	getLabviewValue(vi_name, control_name, &v);
	if ( v.vt != (VT_ARRAY | CVarTypeInfo<T>::VT) )
	{
		throw std::runtime_error("getLabviewValue failed (type mismatch)");
	}
	CComSafeArray<T> sa;
	sa.Attach(v.parray);
	nIn = ( sa.GetCount() > nElements ? nElements : sa.GetCount() );
	for(LONG i=0; i<nIn; ++i)
	{
		value[i] = sa.GetAt(i);
	}
	sa.Detach();
}

	HRESULT GetAssemblyFromAppDomain(_AppDomain* appDomain, const wchar_t* assemblyName, _Assembly **assembly)
	{
		SAFEARRAY* safearray;
		CComSafeArray<IUnknown*> assemblies;

		CHECKCOM(appDomain->GetAssemblies(&safearray));
		assemblies.Attach(safearray);
		for (int i = 0, n = assemblies.GetCount(); i < n; i++)
		{
			CComPtr<_Assembly> a;

			a = assemblies[i];
			if (a == nullptr)
				continue;
			CComBSTR assemblyFullName;
			CHECKCOM(a->get_FullName(&assemblyFullName));
			if (assemblyFullName != nullptr && _wcsnicmp(assemblyFullName, assemblyName, wcslen(assemblyName)) == 0)
			{
				*assembly = a.Detach();
				return S_OK;
			}
		}

		return E_FAIL;
	}

void CRegionDlg::OnBnClickedSelect()
{
    UpdateData();

    ShowWindow(SW_HIDE);

    CRect rcCapture;
    CComPtr<ITSelectionInfo> pSelInfo;
	CComSafeArray<VARIANT, VT_VARIANT> arSafePoints;
    int nCount = 0;
    LONG hWnd = NULL;
    VARIANT points;

    if (!theApp.Select(tsSelectionRectangle, pSelInfo))
	{
        goto Exit;
	}

    // Capture region
    hWnd = pSelInfo->WindowHandle;
    pSelInfo->get_Points(&points);

	// Ttransform safe arry points
	arSafePoints.CopyFrom(points.parray);
	nCount = (int)arSafePoints.GetCount();
    ATLASSERT(2 == nCount);
    if (2 != nCount)
	{
        goto Exit;
	}

    rcCapture.SetRect(GET_X_LPARAM(arSafePoints[0].lVal), GET_Y_LPARAM(arSafePoints[0].lVal),
                      GET_X_LPARAM(arSafePoints[1].lVal), GET_Y_LPARAM(arSafePoints[1].lVal));

    // Fill the values
    m_strWindowName = theApp.GetWindowText((HWND)(LONG_PTR)hWnd);
    m_strWindowHandle.Format(_T("%X"), hWnd);

    m_nX = rcCapture.left;
    m_nY = rcCapture.top;

    m_nWidth  = rcCapture.Width();
    m_nHeight = rcCapture.Height();

    // Capture
    DoCapture(hWnd, rcCapture);

    UpdateData(FALSE);

Exit:
    if (m_nFullHeight > 0)
    {
        //restore the window
        theApp.RestoreWindow(this, m_nFullHeight);
        m_nFullHeight = 0;
    }

    ShowWindow(SW_SHOW);
}

HRESULT RegisterWithGDEventFramework() {
  CComPtr<IGoogleDesktopRegistrar> registrar;
  HRESULT hr = registrar.CoCreateInstance(L"GoogleDesktop.Registrar");

  if (SUCCEEDED(hr)) {
    CComBSTR our_guid(CONSOLE_PLUGIN_GUID);

    WCHAR icon_path[_MAX_PATH + 1] = {0};
    ATLVERIFY(::GetModuleFileNameW(NULL, icon_path, _MAX_PATH - 2) != 0);
    SafeStrCat(icon_path, L"@0", _MAX_PATH+1);

    CComSafeArray<VARIANT> description;
    ATLVERIFY(SUCCEEDED(description.Create(8)));
    VARIANT* props = reinterpret_cast<VARIANT*>(description.m_psa->pvData);

    for (DWORD i = 0; i < description.GetCount(); ++i) {
      props[i].vt = VT_BSTR;
    }

    props[0].bstrVal = ::SysAllocString(L"Title");
    props[1].bstrVal = ::SysAllocString(L"Console Events");
    props[2].bstrVal = ::SysAllocString(L"Description");
    props[3].bstrVal = ::SysAllocString(L"Outputs events from Google Desktop to the console");
    props[4].bstrVal = ::SysAllocString(L"Icon");
    props[5].bstrVal = ::SysAllocString(icon_path);
    props[6].bstrVal = ::SysAllocString(L"Homepage");
    props[7].bstrVal = ::SysAllocString(L"http://desktop.google.com");

    VARIANT desc;
    desc.vt = VT_ARRAY | VT_VARIANT;
    desc.parray = description;

    hr = registrar->StartComponentRegistration(our_guid, desc);

    if (SUCCEEDED(hr)) {
      CComPtr<IUnknown> unknown;
      hr = registrar->GetRegistrationInterface(CComBSTR(L"GoogleDesktop.EventRegistration"),
                                               &unknown);
      ATLASSERT(SUCCEEDED(hr));

      CComQIPtr<IGoogleDesktopRegisterEventPlugin> event_registration(unknown);
      if (event_registration != NULL) {
        long cookie = 0;
        hr = event_registration->RegisterPlugin(our_guid, &cookie);
        if (SUCCEEDED(hr)) {
          hr = registrar->FinishComponentRegistration();

          if (SUCCEEDED(hr)) {
            hr = StoreRegistrationCookie(cookie);
          }
        }
      }
    }
  }

  return hr;
}

void displayCCOMBSTRFiles(CComSafeArray<BSTR> fileSet)
{

	std::wcout << "Displaying Files Generated from the C++ Interface from COM OBJECT" << std::endl;

	for (ULONG i = 0; i < fileSet.GetCount(); i++)
	{
		std::cout << "Qualified File # " <<i<<" : "<< convertBSTR2stdSTR(fileSet.GetAt(i)) << "\n";
	}

}

/**
 * Output = Map of topic id and field data  -  Map to be deleted by caller
 */
std::map<long,CComVariant>* RTDClient::readNewData(){    
    
    SAFEARRAY  *data_sa;
    long        topic_count = 0;
    HRESULT     hr          = comObjectScripRTD->RefreshData( &topic_count, &data_sa );      
                                                                 // Pass Address of SAFEARRAY pointer so that we get pointer to 2D safearray
    if( FAILED(hr) ){                                            // Output Data has to be deleted by client
        std::cout << "RefreshData COM failure." << " - hr - " << hr <<   std::endl;    
        return 0;
    }
    CComSafeArray<VARIANT>  data;                                // Passing data_sa as Constructor input will copy it, but we need to destroy it after use
    data.Attach( data_sa );                                      // So attach instead and let CComSafeArray handle it
    

    ULONG  row_count = data.GetCount(1);                         // No of Rows = 2nd Dimension Count
    if( row_count == 0) return 0 ;
        
    std::map<long,CComVariant> *output = new std::map<long,CComVariant>;    // Map: Topicid, Field Data
         
    long index[2];
    for( ULONG i=0 ; i<row_count; i++  ){
        
        index[0] = 0;                                            // 0,x - Topic ids.   1,x - Data
        index[1] = i;
        CComVariant topic_id_var;
        data.MultiDimGetAt( index, topic_id_var);         
        long topic_id = (long)MiscUtil::getLong( topic_id_var );
        
        index[0] = 1;
        index[1] = i;
        CComVariant topic_data_var;
        data.MultiDimGetAt( index, topic_data_var); 
                
        
        if( output->count(topic_id) != 0  && (*output)[topic_id] != topic_data_var  ){            
            std::cout << "Duplicate:";  MiscUtil::printVariant((*output)[topic_id]); std::cout << "-";  MiscUtil::printVariant(topic_data_var);
            std::cout << std::endl;
            //abort();                                           // If exists - we can have multiple topic values in same call => use vector
        }
        
        (*output)[topic_id] = topic_data_var;   
    } 

    return output;
}

void printHistory(CComVariant history) {
	if (history.vt == (VT_ARRAY | VT_I2)) {
		printf("Ping code history for server: ");

		CComSafeArray<SHORT> codes = history.parray;

		int codeCount = codes.GetCount();
		for (int i = 0; i < codeCount; i++) {
			printf("%hd ", codes[i]);
		}
		printf("\n");

		codes.Destroy();
	}
	else {
		printf("Incorrect variant type\n");
	}
}

//----------------------------------------------------------------------------
//
HRESULT CAnchoRuntime::fireOnBeforeRequest(const std::wstring &aUrl, const std::wstring &aMethod, const CAnchoRuntime::FrameRecord *aFrameRecord, /*out*/ BeforeRequestInfo &aOutInfo)
{
  CComPtr<ComSimpleJSObject> info;
  IF_FAILED_RET(SimpleJSObject::createInstance(info));
  fillRequestInfo(*info, aUrl, aMethod, aFrameRecord);

  CComPtr<ComSimpleJSArray> argArray;
  IF_FAILED_RET(SimpleJSArray::createInstance(argArray));
  argArray->push_back(CComVariant(info.p));

  CComVariant result;
  m_pAnchoService->invokeEventObjectInAllExtensions(CComBSTR(L"webRequest.onBeforeRequest"), argArray.p, &result);
  if (result.vt & VT_ARRAY) {
    CComSafeArray<VARIANT> arr;
    arr.Attach(result.parray);
    //contained data already managed by CComSafeArray
    VARIANT tmp = {0}; HRESULT hr = result.Detach(&tmp);
    BEGIN_TRY_BLOCK
      aOutInfo.cancel = false;
      for (ULONG i = 0; i < arr.GetCount(); ++i) {
        Ancho::Utils::JSObjectWrapperConst item = Ancho::Utils::JSValueWrapperConst(arr.GetAt(i)).toObject();

        Ancho::Utils::JSValueWrapperConst cancel = item[L"cancel"];
        if (!cancel.isNull()) {
          aOutInfo.cancel = aOutInfo.cancel || cancel.toBool();
        }

        Ancho::Utils::JSValueWrapperConst redirectUrl = item[L"redirectUrl"];
        if (!redirectUrl.isNull()) {
          aOutInfo.redirect = true;
          aOutInfo.newUrl = redirectUrl.toString();
        }
      }
    END_TRY_BLOCK_CATCH_TO_HRESULT

  }