About inheritance – PB Docs 105

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  5. About inheritance – PB Docs 105

About inheritance

One of the most powerful features of PowerBuilder is inheritance.
It enables you to build windows, user objects, and menus that derive
from existing objects.

Using inheritance has a number of advantages:

  • When you change an ancestor object,
    the changes are reflected in all the descendants. You do not have
    to make manual changes in the descendants, as you would in a copy.
    This saves you coding time and makes the application easier to maintain.
  • The descendant inherits the ancestor’s
    scripts, so you do not have to re-enter the code to add to the script.
  • You gain consistency in the code and objects in
    your applications.

This chapter describes how inheritance works in PowerBuilder
and how to use it to maximize your productivity.

note.gif Opening ancestors and descendants To enforce consistency, PowerBuilder does not let you open
an ancestor object until you have closed any descendants that are
open, or open a descendent object when its ancestor is open.

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Powerbuilder Documentation 10.5
PB Docs 105 Powerbuilder Documentation Powerbuilder Documentation 10.5 Powerbuilder Documentation Older Powerbuilder User Guide
August 3, 2023
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