//add Id array to a document fragment node HRESULT AddIdsNode( IXMLDOMDocument* pDOM, BSTR indentBstr, const wchar_t* wszIdsNodeName, const wchar_t* wszIdsNodeAttribute, const wchar_t* wszIdNode, const std::vector<int>& ids, IXMLDOMDocumentFragment* pdf // Release is completed outside ) { VARIANT var; BSTR bstr = NULL; BSTR bstr_wst = SysAllocString(L"\t"); IXMLDOMElement* pe = NULL; IXMLDOMDocumentFragment* pdfSub = NULL; IXMLDOMAttribute *pa = NULL; IXMLDOMAttribute *pa1 = NULL; HRESULT hr = S_OK; do { //create a Node to hold ids. bstr = SysAllocString(wszIdsNodeName); HR_SUCCESSCALL( pDOM->createElement(bstr, &pe), hr ); SAFE_BSTR_RELEASE(bstr); //create a attribute for the <wszIdsNodeName> element, and //assign the element num as the attribute value. //get ids num string size_t idsNum = ids.size(); const int radix = 10; const size_t sizeOfstr = 30; wchar_t wszIdsNumString[sizeOfstr] = {0}; _ultow_s(static_cast<unsigned long>(idsNum), wszIdsNumString, sizeOfstr, radix); //put num string into attribute bstr = SysAllocString(wszIdsNodeAttribute); VariantInit(&var); V_BSTR(&var) = SysAllocString(wszIdsNumString); V_VT(&var) = VT_BSTR; HR_SUCCESSCALL( pDOM->createAttribute(bstr, &pa), hr ); HR_SUCCESSCALL( pa->put_value(var), hr ); HR_SUCCESSCALL( pe->setAttributeNode(pa, &pa1), hr ); //create a document fragment to hold ids sub-elements. HR_SUCCESSCALL( pDOM->createDocumentFragment(&pdfSub), hr ); //add ids to pdfSub for( size_t i=0; i < idsNum; ++i ) { int id = ids[i]; WCHAR wszIdString[sizeOfstr] = {0}; _itow_s(id, wszIdString, sizeOfstr, radix); //add white space before <id> HR_SUCCESSCALL( AddWhiteSpaceToNode(pDOM, indentBstr, pdfSub), hr ); HR_SUCCESSCALL( AddWhiteSpaceToNode(pDOM, bstr_wst, pdfSub), hr ); HR_SUCCESSCALL( AddSubNodeToDocumentFragment(pDOM, wszIdNode, wszIdString, pdfSub), hr ); } //test whether it is successful in "add ids to pdfSub" HR_SUCCESSCALL( hr, hr ); //add ids array to document fragment node HR_SUCCESSCALL( AppendChildToParent(pdfSub, pe), hr ); HR_SUCCESSCALL( AddWhiteSpaceToNode(pDOM, indentBstr, pe), hr ); HR_SUCCESSCALL( AppendChildToParent(pe, pdf), hr ); }while(0); //release the com objects SAFE_COM_RELEASE(pa1); SAFE_COM_RELEASE(pa); SAFE_COM_RELEASE(pdfSub); SAFE_COM_RELEASE(pe); //release the bstr and variant SAFE_BSTR_RELEASE(bstr); SAFE_BSTR_RELEASE(bstr_wst); VariantClear(&var); return hr; }