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Question

I want to use a TreeView (with more visible items than its window can show), but I don't need its scrollbars. How to do that?

Derive a new control from TTreeView and override its CreateParams method like this:

uses
  CommCtrl;

procedure TNoScrollbarsTreeview.CreateParams(var Params: TCreateParams);
begin
  inherited;
  Params.style := Params.style or TVS_NOSCROLL;
end;