PowerBuilder extensions – PB Docs 2022

You can use PowerBuilder extension objects in an application in
the same way as you would built-in PowerBuilder objects, with one
difference — you must import the file that contains the definition of
the extension into a library in the target. Some extensions are
provided with PowerBuilder, but you can also obtain them from third
parties or build your own.

For more information about the extensions provided with
PowerBuilder, see PowerBuilder Extension Reference. For how to build your
own extensions, see PowerBuilder Native Interface Programmers Guide and Reference.