The Definitive Guides to the X Window System / Programmer's Supplement for Release 6

For programmers who are familiar with Release 5 of the X Window System and want to know how to use the new features of Release 6. This book provides an update for owners of volumes 1, 2, 4, 5 of the X Window System, and provides tutorial and reference information to all new Xlib and Xt toolkit functions.