TTreeView

Code:

var

  SL : TStringList;

procedure TForm1.CutBtnClick(Sender: TObject);

var

  i, j, StartLevel : integer;

  TNSel : TTreeNode;

begin

  TNSel := TreeView1.Selected;

  if TNSel <> nil then begin

    StartLevel := TNSel.Level;

    i := TNSel.AbsoluteIndex;

    j := i; // note for later deletion

    if SL = nil then

      SL := TStringList.Create

    else

      SL.Clear;

    SL.AddObject(TNSel.Text, pointer(0));

    inc(i);

    with TreeView1 do begin

      while Items[i].Level > StartLevel do begin

        {stop before next sibling to top node\}

        SL.AddObject(Items[i].Text, pointer(Items[i].Level - StartLevel));

        inc(i);

      end; {while Items[i].Level > StartLevel\}

      Items[j].Delete;

    end; {with TreeView1\}

  end; {if TNSel <> nil\}

end;

procedure TForm1.PasteBtnClick(Sender: TObject);

var

  i, Level : integer;

  TNSel, TN : TTreeNode;

begin

  with TreeView1 do begin

    TNSel := Selected;

    if TNSel <> nil then begin

      TN := Items.Insert(TNSel, SL.Strings[0]);

      Level := integer(SL.Objects[0]); // should be 0

      for i := 1 to SL.Count - 1 do begin

        if integer(SL.Objects[i]) < Level then begin

          {go up one level\}

          TN := TN.Parent;

          Level := integer(SL.Objects[i]);

        end; {if integer(SL.Objects[i]) < Level\}

        if Level = integer(SL.Objects[i]) then

          {same level\}

          TN := Items.Add(TN, SL.Strings[i])

        else begin

          {go down one level\}

          TN := Items.AddChild(TN, SL.Strings[i]);

          Level := integer(SL.Objects[i]);

        end; {if Level = integer(SL.Objects[i])\}

      end; {for i := 1 to SL.Count - 1\}

    end; {if TNSel <> nil\}

  end; {with TreeView1\}

end;