怎样用IXMLDOMDocument写xml头

Question

创建个节点，用IXMLDOMDocument::save方法保存成的xml
没有xml头：<?xml version='1.0' encoding='big5' ?>请教怎样加上xml头啊?

Answer 1

MSXML2::IXMLDOMDocumentPtr pXMLDom;
HRESULT hr; hr = pXMLDom.CreateInstance(__uuidof(MSXML2::DOMDocument30)); //create DOM object
if (FAILED(hr))
{
::AfxMessageBox(DF_MSG_FAIL_SAVE_FILE);
return FALSE;
} pXMLDom->async = VARIANT_FALSE; //default:TRUE;
pXMLDom->put_preserveWhiteSpace(FALSE); //////////////////////////////////////////////////////////////////////////
MSXML2::IXMLDOMElementPtr pElementRoot = NULL; 
pElementRoot = pXMLDom->createElement(_T("Root"));

MSXML2::IXMLDOMElementPtr pElementGeneral = NULL; 
pElementGeneral = pXMLDom->createElement(_T("General"));
pElementGeneral->setAttribute(_T("Version"), _T("1.0"));

Answer 2

解决：
IXMLDOMProcessingInstruction *pi_node1 = NULL;
IXMLDOMProcessingInstruction *pi_node2 = NULL;
hr = pXMLDoc->createProcessingInstruction(_bstr_t(_T("xml")), _bstr_t(strDeclare), &pi_node1);
if (FAILED(hr))
    throw hr;
hr = pXMLDoc->insertBefore(pi_node1, _variant_t(pRoot_element), (IXMLDOMNode **)&pi_node2);
if (FAILED(hr))
    throw hr;
...结贴~