有这样一个xml文件:
<root>
<class>
      <classname>aa</classname>
      <classid>1</classid>
      <smallclass>
              <sclassname>a1</sclassname>
              <sclassid>11</sclassid>
      </smallclass>
      <smallclass>
              <sclassname>a2</sclassname>
              <sclassid>12</sclassid>
      </smallclass>
</class>
<class>
     <classname>bb</classname>
     <classid>2</classid>
      <smallclass>
              <sclassname>b1</sclassname>
              <sclassid>21</sclassid>
      </smallclass>
      <smallclass>
              <sclassname>b2</sclassname>
              <sclassid>22</sclassid>
      </smallclass></class>
</root>想要生成这样的树,并用vc的树控件显示出来:
----------------------------
+aa
  |
  |______a1
  |______a2
+bb
  |
  |______b1
  |______b2