TiXmlPrinter 使用方法

	TiXmlElement *in_elem = new TiXmlElement("tagname");
	TiXmlText *text = new TiXmlText( "Hello World" ); 
	in_elem->LinkEndChild(text);
	TiXmlPrinter printer;    
	in_elem->Accept( &printer );
	std::string stringBuffer = printer.CStr();
	cout<<stringBuffer;

输出结果：
<tagname>Hello World</tagname>