AIX Version 4.3 Differences Guide

Event
Error
Used by the server to inform the client that something has happened
that requires action by the client.
Used to indicate that something went wrong.
8.1.3 Server
The server is a program that runs on the workstation in which a graphical display
is attached. The server program, called X, consists of two parts. One part is
device-independent (dix) and interprets requests from Xlib, schedules client
activity, manages the return of events and input to the Xlib library, and performs
other generic actions. The second part is device-dependent (ddx) and renders
the 2D graphic operations defined by the X-window system for the specific
display adapter. The loadddx GAI (Graphic Adapter Interface) load module
implements this interface. The server modules have strictly-defined function and
peripheral support, and the only way to increase the capability of the X-server is
through extensions. Extensions are new modules that can be loaded into the
server and used to perform actions that the basic modules are incapable of.
For example, the core server (the core server is the name given to the server
without any extensions) only supports the keyboard and mouse as peripherals. If
you intend to use other peripherals such as a spaceball, dials, or scanner, you
need to load an extension that is capable of handling these devices.
All of the extensions that are capable of being loaded will be discussed in the
following section.
8.2 X-Windows System Release 6
The sixth release of the X-window system has been ported to AIX Version 4.3
from software provided by the X Consortium. The X Consortium is an
independent, non-profit corporation, the successor to the MIT X Consortium,
which was part of the MIT Laboratory for Computer Science. The actual source
for the port was X11 Release 6.2, which is a proper subset of X11 R6.3 produced
at the request of the OSF Common Desktop Environment (CDE) program. It was
produced by the X Consortium and is being released by OSF simultaneously with
CDE 2.1. Release 6.2 contains only the print extension and the Xlib
implementation of vertical writing and user-defined character support. R6.3 is an
update to R6.1. It is compatible with R6 and R6.1 at the source and protocol
levels in all respects, and binaries are upward-compatible.
This section describes changes in X11 since Release 5. Release 6.2 contains
new function in many areas. In addition, many errors have been corrected.
Except where noted, all libraries, protocols, and servers are upward-compatible
with Release 5. That is, R5 clients and applications should continue to work with
R6 libraries and servers.
The following are new X Consortium standards in Release 6. Each is described in
its own section below:
• X11 Security
• X Image Extension
• Inter-Client Communications Conventions Manual (update)
• Inter-Client Exchange Protocol
192 AIX Version 4.3 Differences Guide