Splitting a form into vertical sections?

Question

Does anyone know how you creeate a form which has essentially two 'views' so that you can have a vertical splitter giving the form two sections: E.g. on the left of the splitter I want to try and show a PDF file and on the right some other normal form controls etc. I'd be interested in knowing what sorts of steps are involved in doing this, and if anyone has succeeded in the past with something similar?