Printable List Box ... Where is it?

I appreciate the help that people have given but I believe I may have stated my problem in a manner that was confusing. I am trying to add a Printable List Box to my program. The Printable List Box is part of Paul Lefebvre’s example of the same name. I have tried to find the Printable List Box to place in the program as I would do with the List Box but cannot find it. How do I add a Printable List Box to a window in my program? I can find nothing regarding the Printable List Box in the reference material so your help would be appreciated. Thank you.

Copy it out of Pauls example

Its very likely a custom subclass of Listbox