树，这个控件，不太懂

sheoh

1. (dcl_Tree_AddParent
   
2.   zlt_Form1_3
   
3.   (list
   
4.     (list "Lines" kk 2 2 3)
   
5.     (list "Lines" dg 2 2 3)
   
6.     (list "Lines" ddg 2 2 3)
   
7.   )
   
8. )
   
9.          
   
10. (dcl_Tree_AddChild
    
11.   zlt_Form1_3
    
12.   (list
    
13.     (list "Lines" "直线" "Line" 2 3)
    
14.     (list "Lines" "多线" "MLine" 2 3)
    
15.     (list "Lines" "多段线" "PLine" 2 3)
    
16.   )
    
17. )
    

复制代码

opendcl里的树控件，看不懂英文的解释，只能理解为上面所示代码，不知道哪错了，求实例！