Layout with scrollbar using toolkit

Hi

We have a layout into dialog and through code, we are adding labels and input panel into layout.

What we need is to fix the size of dialog. For example, it should show only 5 labels and if additional labels are added, it must have scrollbar rather than expanding size of layout and dialog.

How to achieve the same? We are using toolkit and Creo version is 4.0 M030.

Regards

Ketan