Question

delphi treeview 如何在子节点下增加子节点

Answer 1

假设你当前要添加子节点的节点已经被选中
var
nodes:TTreeNodes;
begin
nodes=TreeView1.Items;
nodes.AddChild(TreeView1.Selected,'新建子节点名');
end;

Answer 2

TreeView1.Items.Selected.addchild();