C++ 读取XML文件（tinyXML库的应用）

C++读取xml有很多第三方的xml解析库，最近使用tinyxml库来解析，下面直接上应用例子：

Skin.xml文档内容如下：

<UI>

	<Image name="banner" x="0" y= "0"  width="900" height="40" img_src="\img\ui\banner.jpg" />

	<Image name="logo" x="5" y= "5"  width="32" height="32" img_src="\img\ui\logo.png" />

	<Image name="logo" x="863" y= "5"  width="32" height="32" img_src="\img\ui\close.png" />

	<Button id="1001" x="540" y= "360"  width="48" height="48" img_normal="\img\ui\btn_start_normal.png"  img_hover="\img\ui\btn_start_hover.png" img_down="\img\ui\btn_start_normal.png" />

	<Button id="1002" x="540" y= "480"  width="48" height="48" img_normal="\img\ui\btn_stop_normal.png"  img_hover="\img\ui\btn_stop_hover.png" img_down="\img\ui\btn_stop_normal.png" />

	<Button id="1003" x="250" y= "5"  width="48" height="48" img_normal="\img\ui\btn_pre_normal.png"  img_hover="\img\ui\btn_pre_hover.png" img_down="\img\ui\btn_pre_normal.png" />

	<Button id="1004" x="250" y= "845"  width="48" height="48" img_normal="\img\ui\btn_next_normal.png"  img_hover="\img\ui\btn_next_hover.png" img_down="\img\ui\btn_next_normal.png" />

</UI>

　　C++利用tinyxml库读取的关键代码如下：（这里得先说明下，下面代码中的MyButton类是我自己自定义的button类，实现原理和代码在我的另一篇文章：http://www.cnblogs.com/JczmDeveloper/p/3494615.html）：

#include "tinyxml/tinyxml.h"

void LoadSkin(LPCTSTR lpszRelativePath,LPCTSTR lpszXmlName)

{

	CString strCurDir = Util::GetCurrentDir();//获取当前目录

	CString strRelativePath = lpszRelativePath;

	CString strXmlName = lpszXmlName;

	strCurDir += strRelativePath;

	CString strXmlPath = strCurDir + L"\\"+ strXmlName;

	USES_CONVERSION;

	LPCSTR lpStr =NULL;

	lpStr = T2A(strXmlPath.GetBuffer(strXmlPath.GetLength()));

	//加载xml文件

	TiXmlDocument* pDoc = new TiXmlDocument(lpStr);

	bool bLoadOk = pDoc->LoadFile();

	//读取xml文件

	CString strX ,strY,strWidth,strHeight,strImgSrc;

	int nX =0,nY=0,nWidth=0,nHeight=0;

	int nID = 0;

	CString strID,strBtnNormal,strBtnHover,strBtnDown;

	CString strElementType;

	CString strAttrName = L"";

	TiXmlElement* pRootElement = pDoc->RootElement();

	TiXmlElement* pElement = pRootElement->FirstChildElement();

	while(pElement)

	{

		strElementType = pElement->Value();

		if(strElementType == L"Button")

		{

			//读取当前元素节点

			TiXmlAttribute*	pAttribute = pElement->FirstAttribute();

			while(pAttribute)

			{

				strAttrName = pAttribute->Name();

				if(strAttrName ==L"id")

					strID = pAttribute->Value();

				else if(strAttrName == L"x")

					strX =pAttribute->Value();

				else if(strAttrName == L"y")

					strY = pAttribute->Value();

				else if(strAttrName == L"width")

					strWidth = pAttribute->Value();

				else if(strAttrName == L"height")

					strHeight = pAttribute->Value();

				else if(strAttrName == L"img_normal")

					strBtnNormal = pAttribute->Value();

				else if(strAttrName == L"img_hover")

					strBtnHover = pAttribute->Value();

				else if(strAttrName == L"img_down")

					strBtnDown = pAttribute->Value();

				pAttribute = pAttribute->Next();

			}

			nID = _ttoi(strID);

			nX = _ttoi(strX);

			nY = _ttoi(strY);

			nWidth = _ttoi(strWidth);

			nHeight = _ttoi(strHeight);

			CString szDir = Util::GetCurrentDir();

			strBtnNormal = szDir + strBtnNormal;

			strBtnHover = szDir + strBtnHover;

			strBtnDown = szDir + strBtnDown;

			CRect rt;

			rt.top =  nX;

			rt.left = nY;

			rt.right = rt.left + nWidth;

			rt.bottom = rt.top + nHeight;

			MyButton* pButton = new MyButton;

			pButton->SetBtnBmp(strBtnNormal,strBtnHover,strBtnDown);

			pButton->Create(m_hWnd,rt,NULL,WS_CHILD|WS_VISIBLE);

			pButton->SetBtnID(nID);

		}

		else if(strElementType == L"Image")

		{

			//读取当前元素节点

			TiXmlAttribute*	pAttribute = pElement->FirstAttribute();

			while(pAttribute)

			{

				strAttrName = pAttribute->Name();

				if(strAttrName == L"x")

					strX =pAttribute->Value();

				else if(strAttrName == L"y")

					strY = pAttribute->Value();

				else if(strAttrName == L"width")

					strWidth = pAttribute->Value();

				else if(strAttrName == L"height")

					strHeight = pAttribute->Value();

				else if(strAttrName == L"img_src")

					strImgSrc = pAttribute->Value();

				pAttribute = pAttribute->Next();

			}

			nX = _ttoi(strX);

			nY = _ttoi(strY);

			nWidth = _ttoi(strWidth);

			nHeight = _ttoi(strHeight);

			CString szDir = Util::GetCurrentDir();

			CString strImgPath = szDir + strImgSrc;

			Graphics graphics(GetWindowDC());

			Image img(strImgPath,FALSE);

			graphics.DrawImage(&img,nX,nY,nWidth,nHeight);

		}

		//下一个元素节点

		pElement = pElement->NextSiblingElement();

	}

}