//列出DBGridEH被选中的值
procedure TForm1.N4Click(Sender: TObject);
 Var
    I:Integer;
begin
   for I := 0 to DBGridEh4.SelectedRows.Count-1 do
      begin
        DBGridEh4.DataSource.DataSet.GotoBookmark(pointer(DBGridEh4.SelectedRows.Items[i]));
        Memo1.Lines.Add(DBGridEh4.Fields[1].AsString);
      End;
end;