What are system objects?
PowerBuilder system class objects are
the built-in objects you use to develop your application. PowerBuilder
system objects include objects such as windows and menus, as well
as graphical controls and predefined entities that you can reference
in your application, such as the Message and Error objects.
PowerBuilder controls are a subset
of system objects that you place in windows or user objects. Typically,
they are graphical objects that allow users to interact with your
application or that you use to enhance the design of your windows.
PowerBuilder system structures are
a subset of system objects that contain properties that describe
the state of other system objects or the system itself. For example,
the Environment object is a structure that holds information about
the computing platform the PowerBuilder Application object is running