1. Introduction

This guide is a collection of "mini-tutorials" aimed at explaining and demonstrating how to use various parts of GNUstep AppKit, aka gnustep-gui. This manual assumes you are familiar with Objective-C and some parts of gnustep-base, but the latter is not strictly necessary. Make sure you have a copy of the gnustep-base manual lying around for handy reference.

It provides an overview of some components, concepts and ideas that you will need to understand so that you can develop with gnustep-gui, and it then goes on to detail the use of various parts of the AppKit, although not strictly on a class by class basis.

gnustep-gui is primarily aimed primarily at helping you write GUI applications. It is the AppKit portion of the OpenStep specification, providing services for the rapid development of GUI interfaces and code. It shares the same heritage as Apple's Cocoa environment, meaning that GNUstep and Cocoa have very similiar API's, in most cases the same.