PowerBuilder:在选择其childnode时如何获取treeview parenthnode的值

Question

我是PowerBuilder的新手，我很难在选择其childnodes之后获得treeview parentnode的值。

就像.net（treeview.selected.parent）一样。

有人可以给我一个主意。

tia。

Marko

Answer 1

一个小示例：

//To determine this you can check the level they have for example:
treeviewitem tvi 
long l_tvi 
//We locate the selected item
l_tvi = tv_1.finditem(CurrentTreeItem!,0) 
if l_tvi>0 then 
    tv_1.getitem(l_tvi,tvi)//We extract it
    //The LEVEL property will tell you what level you are in
    messagebox('Nivel',string(tvi.level)) 
end if 
//Another way to identify if the item has a parent is:
long l_tvi,l_tvi_parent 
//We locate the selected item
l_tvi = tv_1.finditem(CurrentTreeItem!,0) 
if l_tvi>0 then 
    l_tvi_parent = tv_1.finditem(ParentTreeItem!,l_tvi) 
    if l_tvi_parent > 0 then 
        //The item has a parent
    else 
        //Item has no parent
    end if 
end if 

链接：Treeview中的PB控制技能的使用