General Info: Inheritance

The concept of a class makes it possible to define subclasses that share some or all of the main class characteristics. This is called inheritance. Inheritance also allows you to reuse code more efficiently. In a class tree, inheritance is used to design classes vertically. (You can use Interfaces to design classes horizontally within a class tree.) With inheritance, you are defining an "is-a" relationship (i.e. a chow is-a dog). Analysts using UML call this generalization where you generalize specific classes into general parent classes.

Delphi Prism Inheritance

In Prism, like Delphi, you use the class keyword followed by the parent class in parens. If you leave out the parent class, your class inherits from System.Object.

In the following example, a terminator T-600 is-an android. 

Android = public class

end;

T-600 = public class(Android)

end;