I am looking for the ability to have multiple sections on a single window as is used with Windows Explorer. My end users need to be able to size the sections one by one as the user likes.

It has been a while since I located it and now I would like to try using it. I do not know the technical name for the control that works the magic.

Sitting here hoping someone out there knows what I am talking about and can point me towards a sample program or the proper name for it.

Thank you for reading this.