Multiple Inheritance and Operator Overloading

Abstract

This chapter describes how data are interactively input into the drawing package, that is, it describes the use of the keyboard and mouse as well as a buffer for storing keystrokes. The keyboard, mouse and buffer are implemented using classes arranged in a hierarchy in which the buffer inherits from two classes. This therefore provides an example of multiple inheritance. The buffer also provides an example of the technique of operator overloading. These classes are implemented in three general library modules, not specific to the drawing package. The first section gives an overview of the class hierarchy.