Release 10.1A: OpenEdge Getting Started:
Object-oriented Programming

> ## Programming with Class-based Objects

> Once an instance of a class is created, you will want to access the data members and methods of the object instance. The following sections detail how to instantiate a class-based object, and how to access the data members and methods of an object instance:

> - Instantiating and managing class-based objects

> - Verifying the type and validity of an object reference

> - Using built-in system and object references

> - Assigning object references

> - Comparing objects

> - Defining and using visual objects in classes

> - Using preprocessor features in a class

> - Raising and handling error conditions

> - Reflection — using the Progress.Lang.Class class

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