About the sample applications – PB Docs 2019

PowerBuilder provides sample applications with source code so you
can learn and reuse the techniques used in the samples.

These samples are contributed by Appeon employees and users and are
updated frequently. They include standalone applications that illustrate
specific features of PowerBuilder, including features such as using Web
services, and writing visual and nonvisual extensions using the
PowerBuilder Native Interface. Most samples include a readme document that
explains which features a sample demonstrates and how to download and
use it.