How to find a TAdvTreeViewVirtualNode

VCL TMS VCL UI Pack
1

I wonder if it is possible to find a TAdvTreeViewVirtualNode in a TAdvTreeViewusing Row and Index?
A TAdvTreeViewVirtualNode has .Index and .Row properties which can be saved. It would be nice to retrieve the TAdvTreeViewVirtualNode with Row and Index as an argument.
I ask this question because I noticed that the argument in an AfterSelectNode event is subject to change.
I have this code:


procedure TForm1.TVprogrammasAfterSelectNode(Sender: TObject;
  ANode: TAdvTreeViewVirtualNode);
begin
  MyFunction1;
  MyFunction2(ANode);
end;


When MyFunction2 is called ANode sometimes has changed. I would like to retrieve it again using Row and Index (or something else? Tell me)

2

Hi, 


The index is relative to its parent, the row is relative to the root of the treeview. You can use the FindVirtualNodeByRow or FindNodeByRow functions to retrieve the node for a specific row. If you are working with a collection, you can persist a reference to the node instead by using the following code:

procedure TForm1.TVprogrammasAfterSelectNode(Sender: TObject;  ANode: TAdvTreeViewVirtualNode);
var
  n: TAdvTreeViewNode;
begin
    n := ANode.Node;
  MyFunction1(n);
  MyFunction2(n);
end;

As n will always refer to the same collection item, even if the index/row changes.
3

As I reload the Nodes sometimes, the reference to the Node does not work and I can't find the 

FindVirtualNodeByRow function? It's not listed with TAdvTreeView...

4

Hi, 


the FindNodeByRow and FindVirtualNodeByRow have been added in v1.1.1.0 of TAdvTreeView (TMS Component Pack v8.4.1.0)

5

Ah, I have 1.1.0.7. I will update, thank you.