Creating a subclass

Making your own applications : Defining classes : Example: Defining the class Chooser : Creating a subclass

Creating a subclass

To subclass from Object, do the following:

1.

From a standard Application Browser opened on DevelopChooser, select Object.

2.

From the Classes menu, select Add > Subclass.

3.

In the displayed prompter, type Chooser, then select OK. A window opens, prompting you to select what type of subclass should be added.

The choices are:

subclass

Add a class that has only named instance variables.

variableSubclass

Add a class that has indexed instance variables capable of storing arbitrary objects, and can also have named instance variables.

variableByteSubclass

Add a class that has indexed instance variables that hold bytes.

variableWordSubclass

Add a class that has indexed instance variables that hold words.

variableLongSubclass

Add a class that has indexed instance variables that hold long words.

4.

Select subclass; then select OK.
$C:\Users\documentation\Documents\vastePublisher\stable\VAS Documentation Word\images\sg\stdfcls1.png$

You have just created a new class in DevelopChooser. In an Application Browser, you can now view the class definition of class Chooser. In an Application Manager with DevelopChooser selected, you can see that a new class edition named Chooser is listed in the classes pane.