谁知道msxml中的insertBefore怎么用，紧急求助

[elux]

C/C++ Syntax
HRESULT insertBefore(
IXMLDOMNode *newChild,
VARIANT refChild,
IXMLDOMNode **outNewChild);
给个例子
以前的帖子好像不行尤其是第二个参数

[saucer]

should be a node, from the documentation:

refChild
A variant. The address of the reference node; the newChild parameter is inserted to the left of the refChild parameter. If Null, the newChild parameter is inserted at the end of the child list.


examples:
IXMLDOMProcessingInstructionPtr pPI = NULL;

pPI = pXMLDoc->createProcessingInstruction
("xml", "version='1.0' encoding='UTF-8'");

_variant_t vNullVal;
vNullVal.vt = VT_NULL;
pXMLDoc->insertBefore(pPI, vNullVal);

or

CComVariant varType = NODE_ELEMENT;
pDoc->createNode(varType, bstrName, NULL, &pNewNode); //
CComPtr<IXMLDOMNode> pNewNode;
CComVariant varNode = pNode; // pNode is the existing node in the
document
pEle->insertBefore(pNewNode, varNode, &pReturnNode); // insert the
node.


or

CComVariant vFirstChild( pFirstChild );
hResult = m_spDOM->insertBefore( pInstruction, vFirstChild, &pNewChild );

[elux]

非常感谢您的回答
your help is greatly appreicated
I will try your codes.
hope it works

[ray428]

本想说点什么的，现在看来不需要了。

[elux]

Thanks

[闻缺陷则喜何志丹]

MSXML2::IXMLDOMNodePtr pTestNode;
pDoc->raw_selectSingleNode((_bstr_t)"/开目信息文件/数据/元素", &pTestNode);
CComVariant vFirstChild = pTestNode;
Node->raw_insertBefore(newNode,vFirstChild,&pTestNode);

为什么vFirstChild的值为true,VT_BOOL

[闻缺陷则喜何志丹]

不用麻烦大家了,是智能指针惹的祸
:)