XML解析类：CMarkup
树形控件类：CTreeCtrl
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XML文件内容
<Qorganization>
<tree iAreaCode="3204000001" iChanId="" iChanType="" iChanModel="" sChanName="" iUpperCode="0" sAreaName="滨江区"/>
<tree iAreaCode="3204000002" iChanId="123456789000000001" iChanType="60" iChanModel="0" sChanName="支架球机" iUpperCode="3204000001" sAreaName=""/>
<tree iAreaCode="3204000003" iChanId="" iChanType="" iChanModel="" sChanName="" iUpperCode="3204000001" sAreaName="长河派出所"/>
<tree iAreaCode="3204000004" iChanId="123456789000000002" iChanType="63" iChanModel="0" sChanName="模拟卡口1" iUpperCode="3204000003" sAreaName=""/>
<tree iAreaCode="3204000005" iChanId="123456789000000003" iChanType="60" iChanModel="0" sChanName="支架球机" iUpperCode="3204000003" sAreaName=""/>
<tree iAreaCode="3204000006" iChanId="" iChanType="" iChanModel="" sChanName="" iUpperCode="0" sAreaName="西湖区"/>
采用DOM 进行解析xml。要求将xml字串插入指定节点作为其子节点
比如：
原xml
<root>
</root>
要插入的xml字串
<a>test</a>
目的xml：
<root>
<a> ......
