Wine (Wine Is Not an Emulator) is not an Emulator in the common sense. Wine provides a set of APIs allowing Windows applications to run directly in X-Windows in Linux. It is also possible to compile programs using these APIs. Up until now Wine mostly runs on x86 architecture, but ports to other architectures in progress.

Wine was started in early 1993 by Bob Armstrad and Alexandre Julliard. Currently more than hundred programmers are involved in Wine development. After a time of stagnation Wine made significant progress since late 1998. Today, many applications run with more and more stability under Wine on Linux and Unix systems. Although Wine still is available only as a developer's version, installing it could be worthwhile for users and system administrators. Wine supports applications for Windows 3.1, -95 and -98 (TM). The first release of Wine is in sight.

This book introduces the fundamentals of Motif programming and addreses wider issues concerning the X Window system. The aim of this book is to provide a practical introduction to writing Motif programs. The key principles of Motif programming are always supported by example programs.The X Window system is very large and this book does not attempt to detail every aspect of either X or Motif. This book is not intended to be a complete reference on the subject.

The book is organised into logical parts, it begins by introducing the X Window system and Motif and goes on to study individual components in detail in specific Chapters. In the remainder of this Chapter we concentrate on why Motif and related areas are important and give a brief history of the development of Motif.