一个QReport的问题

Question

var
  L: TQRLabel;
  T: TQRDBText;
begin
        L:=TQRLabel.Create(ColumnHeaderBand1);
        L.Parent:=QRDetail.Bands.ColumnHeaderBand;
        L.Top:=iTop;
        L.Left:=iLeft;
        L.Height:=17;
        L.Name:='QS'+IntToStr(i);
        L.Caption:=Fields[i].DisplayLabel;
        L.Width:=Fields[i].DisplayWidth*8;        T:=TQRDBText.Create(DetailBand1);
        T.Parent:=QRDetail.Bands.DetailBand;
        T.Top:=iTop-4;
        T.Left:=iLeft;
        T.Height:=17;
        T.Transparent:=true;
        T.DataSet:=QRDetail.DataSet;//      ClientDataSet;
        T.DataField:=Fields[i].FieldName;
        T.Width:=Fields[i].DisplayWidth*8;end;