AdvTreeView

Specht_Martin · October 3, 2015, 12:27pm

Hello together,

I am trying to delete a node in the collection based mode in the OnBeforeUpdateNode Event. But in this event there is only a virtual node value called ANode:


procedure TForm1.AdvTreeViewGroupsBeforeUpdateNode(Sender: TObject;
  ANode: TAdvTreeViewVirtualNode; AColumn: Integer; var AText: string;
  var ACanUpdate: Boolean);

I tried to use the RemoveVirtualNode-Method, but the Nodes.Count didn't decrease.

Thanks
Martin

Pieter_Scheldeman · October 5, 2015, 8:38am

Hi,

You can access the collection item by using the following code:

procedure TForm1.AdvTreeView1BeforeUpdateNode(Sender: TObject;

ANode: TAdvTreeViewVirtualNode; AColumn: Integer; var AText: string;

var ACanUpdate: Boolean);

begin

AdvTreeView1.RemoveNode(ANode.Node);

end;

Kind Regards,

Pieter