IID_IXMLDOMNode标识在哪儿定义的？使用DOM接口时碰到的。

Question

IXMLDOMElement* pElement;已经正确得到pElement指针
IXMLDOMNode* rootnode;
pElement->QueryInterface(IID_IXMLDOMNode,(void**)&rootnode);已经包含了msxml.h msxml2.lib #import <msxml3.dll>

Answer 1

pElement->QueryInterface(MSXML::IID_IXMLDOMNode,(void**)&rootnode);

Answer 2

MSXML::IID_IXMLDOMNode还是认不得．

Answer 3

const IID IID_IXMLDOMNode = {0x2933BF80,0x7B36,0x11d2,{0xB2,0x0E,0x00,0xC0,0x4F,0x98,0x3E,0x60}};
get_childNodesget_length

Answer 4

给你我的代码
ASSERT(pXMLDoc!=NULL);
if (pos>0) {
try{
IXMLDOMElementPtr pXMLRootNode;
pXMLRootNode = IXMLDOMElementPtr(pXMLDoc->selectSingleNode("root"));
if(pXMLRootNode!=NULL){
IXMLDOMNamedNodeMapPtr pAttrs = NULL; 
IXMLDOMNodePtr pAttrItem = NULL;
IXMLDOMNodeListPtr nodeList = pXMLRootNode->GetchildNodes();
IXMLDOMNodePtr childNodePtr = NULL;
DOMNodeType nodeType;
long nCount = nodeList->length;
if(nCount<=2){
return XMLFORMATERROR;
}
long nCount_ = 0;
CString strAttrName="";
CString strAttrValue="";
childNodePtr = nodeList->item[pos+1];
if(childNodePtr!=NULL){
childNodePtr->get_attributes(&pAttrs);
pAttrs->get_length(&nCount_);
nodeType = childNodePtr->nodeType;
if(nodeType == NODE_ELEMENT)
{
for(int j=0;j<nCount_;j++){
pAttrs->get_item(j,&pAttrItem);
strAttrName  = (char*)(_bstr_t)pAttrItem->nodeName;
if(strAttrName.Compare("BufferLen")==0){
strAttrValue  = (char*)(_bstr_t)pAttrItem->nodeTypedValue;
bufferLen = atoi(strAttrValue);
_variant_t vBuffer;
vBuffer =  childNodePtr->nodeTypedValue;
for(long i=0;i<bufferLen;i++)
{
SafeArrayGetElement(vBuffer.parray,&i,pBuffer+i);
}
::VariantClear(&vBuffer);
break;
}
}
}
}
else{
return POSITIONNULL;
} if(pAttrs!=NULL){
pAttrs.Release();
pAttrs = NULL; 
}
if(pAttrItem!=NULL){
pAttrItem.Release();
pAttrItem = NULL;
}
if(pAttrItem!=NULL){
nodeList.Release();
nodeList = NULL;
}
if(childNodePtr!=NULL){
childNodePtr.Release();
childNodePtr = NULL;
}

}
pXMLRootNode.Release();
pXMLRootNode = NULL;
}
catch (...) {
return XMLNODESELECTFAILURE;
}
return 1;
}
else
{
return POSITIONNULL;
}