How To Close Another Main Node When A Main Node Is Opened In TUniTreeView?

[Frederick]

Let's say I have the following tree view structure:-

Main Node 1
   - Sub Node 11
   - Sub Node 12
Main Node 2
   - Sub Node 21
   - Sub Node 22

Currently, when I click main node 1, it opens to show the sub nodes 11 and 12. When I click main node 2, it also opens to show sub nodes 21 and 22. However, main node 1 remains opened.

How do I, when I click main node 2, cause main node 1 to close? In other words, there can only be one main node opened at any one time.

--
Frederick
(UniGUI Complete - Professional Edition 1.90.0.1565)
 

[Sherzod]

Hello @Frederick

Use this config:

procedure TMainForm.UniFormCreate(Sender: TObject);
begin
  UniTreeView1.JSInterface.JSConfig('singleExpand', [True]);
end;

 

[Frederick]

Thank you