Treeview > Get the Top Most Parent of a Child? 1

[simmo09]

Hi, normally when i deal with treeviews that have more then one level, i can get the parent of the child by doing something like:

ShowMessage(TreeView1.Selected.Parent.Text);

if say i know it is 2 levels down the tree i would use:

ShowMessage(TreeView1.Selected.Parent.Parent.Text);

which would get the root parents text.

BUT, what if i dont know how many levels the tree has, how would i always get the top most node parent?

Thanks!

 

[Griffyn]

use a while loop:

eg.

var
  p : TTreeNode;
begin
  p := TreeView1.Selected.Parent;
  while Assigned(p.Parent) do
    p := p.Parent;

p will then equal the topmost parent node.

 

[Griffyn]

error in my code, change the initial assign to

p := TreeView1.Selected;

otherwise p will equal nil if the root node is selected.

 

[simmo09]

ok thank you, will try that..

 

[simmo09]

seems to of done the trick thanks griffyn