给Listview加上进度条

procedure TMainForm.FormShow(Sender: TObject);
var
   I: Integer;
   ProBar: TGauge;
   Li: TListItem;
begin
   for I := 0 to DataListView.Items.Count - 1 do begin
       Li := DataListView.Items[I];
       ProBar := TGauge.Create(Self);
       ProBar.Parent := DataListView;
       Li.Data := ProBar;
       ProBar.Left := Li.DisplayRect(drBounds).Left + DataListView.Columns[0].Width+5;
       ProBar.Top := Li.DisplayRect(drBounds).Top+1;
       ProBar.Width := DataListView.Columns[1].Width-5;
       ProBar.Height:= 14;
       ProBar.BackColor:=$00F6F6F6;
       ProBar.ForeColor:=clSilver;
       ProBar.Font.Name:='Tahoma';
       ProBar.Font.Size:=8;
   end;
end;

procedure TMainForm.FormDestroy(Sender: TObject);
var
   I: Integer;
begin
   for I := 0 to DataListView.Items.Count - 1 do begin
       if DataListView.Items[I].Data <> nil then
         TProgressBar(DataListView.Items[I].Data).Free;
   end;
end;

procedure TMainForm.Timer1Timer(Sender: TObject);
begin
   Randomize;
   TGauge(DataListView.Items[Random(DataListView.Items.Count)].Data).Progress := Random(101);
end;