ReAction

Introduction

ReAction is a toolkit for GUI programming in AmigaOS. It is based on Intuition's BOOPSI, an object-oriented philosophy. Understanding the basic concepts of BOOPSI is an important prerequisite for working with the toolkit so make sure you have studied the BOOPSI documentation linked above.

Note

There seems to be a certain degree of confusion as regards the relation between ReAction and BOOPSI. It must be understood that the two are not really interchangeable terms (although they are sometimes used in this way). ReAction is a BOOPSI toolkit so there is a part-whole relation between them. ReAction can’t exist without BOOPSI, but BOOPSI can perfectly exist without ReAction. More specifically, BOOPSI is a general object-oriented programming framework while ReAction is a set of ready-made classes based on this framework.

Originally a third-party product, ReAction became part of the operating system in AmigaOS 3.5. The system, whose internal BOOPSI class set had been rather limited, received a comprehensive toolkit covering most GUI programming needs.

Context and Input/Output

Describe how input.task is involved, etc.