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;
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Копировать и вставлять TreeNode