用MSXML 4.0：
1)用一般的指針
2)用智能指針，比較簡(jiǎn)單
下面的例子用智能指針：
步驟：
Programmatically, the dynamDOMsmart application performs the following steps:
- Creates an XML DOM instance (
pXMLDom).
- Calls the
createProcessInstruction method on pXMLDom. This creates a processing instruction node (pi) targeted for XML 1.0.
- Calls the
appendChild method on pXMLDom. This adds the processing instruction node (pi) to pXMLDom.
- Calls the
createComment method on the DOM object (pXMLDom) to create a comment node (pc) and then append it pXMLDom.
- Creates a
<root> element as the document element, with a created attribute whose value is set to a string value of "using DOM". Adds this element (<root>) to the DOM object (pXMLDom).
- Creates a
<node1> element with some character data as its content. Appends this element (pe) to the document element (documentElement) of the DOM object (pXMLDom).
- Creates a
<node2> element that contains a CDATA section (pcd) with markup text. Appends this element (pe) to the document element (documentElement) of the DOM object (pXMLDom).
- Creates a
<node3> element that contains a DOM document fragment (pdf). This fragment contains three other empty child elements: <subNode1>, <subNode2>, and <subNode3>. The code then appends this element (pe) to the document element (documentElement) of the DOM object (pXMLDom).
- Saves this dynamically created DOM object to the project's main directory, and prints the XML data in the application console.
源代碼：
#include <stdio.h>
#import <msxml4.dll>
using namespace MSXML2;
int main(int argc, char* argv[])
{
IXMLDOMDocument3Ptr pXMLDom;
HRESULT hr;
CoInitialize(NULL);
hr = pXMLDom.CreateInstance(__uuidof(DOMDocument40));
if (FAILED(hr))
{
printf("Failed to CreateInstance on an XML DOM");
return NULL;
}
pXMLDom->preserveWhiteSpace = VARIANT_TRUE;
// Create a processing instruction targeted for xml.
IXMLDOMProcessingInstructionPtr pi;
pi = pXMLDom->createProcessingInstruction("xml", "version='1.0'");
if (pi != NULL) {
pXMLDom->appendChild(pi);
pi.Release();
}
// Create a processing instruction targeted for xml-stylesheet.
pi = pXMLDom->createProcessingInstruction("xml-stylesheet",
"type='text/xml' href='dom.xsl'");
if (pi != NULL) {
pXMLDom->appendChild(pi);
pi.Release();
}
// Create a comment for the document.
IXMLDOMCommentPtr pc;
pc = pXMLDom->createComment("sample xml file created using XML DOM object.");
if (pc != NULL) {
pXMLDom->appendChild(pc);
pc.Release();
}
// Create the root element (i.e., the documentElement).
IXMLDOMElementPtr pe;
pe = pXMLDom->createElement("root");
// Create a "created" attribute for the root element and
// assign the "using dom" character data as the attribute value.
IXMLDOMAttributePtr pa;
pa = pXMLDom->createAttribute("created");
if (pa != NULL)
{
pa->value = "using dom";
pe->setAttributeNode(pa);
pa.Release();
}
// Add the root element to the DOM instance.
pXMLDom->appendChild(pe);
pe.Release();
// Next, we will create and add more nodes to the root element
// we've just created.
// Create an element to hold text content.
pe = pXMLDom->createElement("node1");
if (pe != NULL)
{
// Add newline + tab for indentation.
pXMLDom->documentElement->appendChild(pXMLDom->createTextNode("\n\t"));
pe->text = "some character data";
pXMLDom->documentElement->appendChild(pe);
pe.Release();
}
// Create an element to hold a CDATA section.
pe=pXMLDom->createElement("node2");
if (pe != NULL)
{
// Add newline + tab for indentation.
pXMLDom->documentElement->appendChild(pXMLDom->createTextNode("\n\t"));
IXMLDOMCDATASectionPtr pcd;
pcd = pXMLDom->createCDATASection("<some mark-up text>");
if (pcd != NULL) {
pe->appendChild(pcd);
pcd.Release();
}
pXMLDom->documentElement->appendChild(pe);
pe.Release();
}
// Create an element to hold three empty subelements.
pe=pXMLDom->createElement("node3");
if (pe != NULL)
{
// Add newline +tab for indentation.
pXMLDom->documentElement->appendChild(pXMLDom->createTextNode("\n\t"));
IXMLDOMDocumentFragmentPtr pdf;
pdf = pXMLDom->createDocumentFragment();
pdf->appendChild(pXMLDom->createTextNode("\n\t\t"));
pdf->appendChild(pXMLDom->createElement("subNode1"));
pdf->appendChild(pXMLDom->createTextNode("\n\t\t"));
pdf->appendChild(pXMLDom->createElement("subNode2"));
pdf->appendChild(pXMLDom->createTextNode("\n\t\t"));
pdf->appendChild(pXMLDom->createElement("subNode3"));
pdf->appendChild(pXMLDom->createTextNode("\n\t"));
pe->appendChild(pdf);
pdf.Release();
pXMLDom->documentElement->appendChild(pe);
pe.Release();
pXMLDom->documentElement->appendChild(pXMLDom->createTextNode("\n"));
}
printf("Dynamically created DOM:\n%s\n",
(LPCSTR)pXMLDom->xml);
hr = pXMLDom->save("dynaDom.xml");
if (FAILED(hr))
{
printf("Failed to save DOM to dynaDom.xml\n");
}
else
{
printf("DOM saved to dynamDom.xml\n");
}
if (pXMLDom) pXMLDom.Release();
CoUninitialize();
return 0;
}
結(jié)果：
Dynamically created DOM:
<?xml version="1.0"?>
<?xml-stylesheet type='text/xml' href='dom.xsl'?>
<!--sample xml file created using XML DOM object.-->
<root created="using dom">
<node1>some character data</node1>
<node2><![CDATA[<some mark-up text>]]></node2>
<node3>
<subNode1/>
<subNode2/>
<subNode3/>
</node3>
</root>
DOM saved to dynamDom.xml
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在此過(guò)程中，經(jīng)常會(huì)有一些錯(cuò)誤：保存文件的路徑，有的時(shí)候我寫(xiě)絕對(duì)路徑，但是結(jié)果它卻還是保存到相對(duì)路徑，（為什么那？）還有里面的字符格式的轉(zhuǎn)化，比較復(fù)雜，哈哈！歡迎大家來(lái)討論：
哪位高手知道，關(guān)于保存路徑的具體的東西啊，反正我發(fā)現(xiàn)相對(duì)路徑有的時(shí)候并不總是相對(duì)你的原程序，當(dāng)你打開(kāi)文件處理在保存時(shí)，相對(duì)路徑是相對(duì)你程序打開(kāi)的文件的路徑！
還有其他的嗎，該輪到你們拉：