Release 10.1A: OpenEdge Development:
ADM and SmartObjects

Customizing an existing ADM class

The custom class files built into a particular ADM class provide a way for you to add modifications and/or extensions without altering its standard class files. Most of the custom class files share essentially the same structure as the corresponding standard class files. The custom files allow you to alter an existing ADM class by:

Adding new properties.
Adding a new super procedure.
Adding new behaviors.
Replacing or removing existing behaviors.
Adding new prototype definitions.
Adding new instance properties.

All standard class files in the %DLC% (Windows) or $DLC (UNIX) directory under the adm2 and web2 subdirectories include custom hooks that allow their customization. Similarly, any new class that you create (or that is given to you) has these custom hooks built in.

For descriptions of the custom class files, as well as design rules and special notes on adding properties, see the "Adding application logic to your new or customized ADM class" section. For an example of customizing an existing class, see the "Customizing the visual class" section.