呵呵,简单 1、判断整个树中是否有节点 if bomtreeview.Items.count<=0 then showmessage('This TreeView no Node'); 2、判断某一节点是否有子节点 if bomtreeview.Selected.HasChildren then showmessage('This TreeView has Children'); 3、判断当前节点是否有效 if bomtreeview.Selected=nil then showmessage('This Current Node is Nil'); 4、用好节点的data属性,它可以指向一个对象,我用它做了很多好东西!
if bomtreeview.Selected.HasChildren then
showmessage('This TreeView has Children');
我用的是Delphi5它怎么说TreeView1.Nodes.count=0中的nodes没声明呀!!!
1、判断整个树中是否有节点
if bomtreeview.Items.count<=0 then
showmessage('This TreeView no Node');
2、判断某一节点是否有子节点
if bomtreeview.Selected.HasChildren then
showmessage('This TreeView has Children');
3、判断当前节点是否有效
if bomtreeview.Selected=nil then
showmessage('This Current Node is Nil');
4、用好节点的data属性,它可以指向一个对象,我用它做了很多好东西!