linux D Bus tutorial

http://dbus.freedesktop.org/doc/dbus-tutorial.html
D-Bus Tutorial
Havoc
Pennington
Red Hat, Inc.
<hp@pobox.com
>
David
Wheeler
John
Palmieri
Red Hat, Inc.
<johnp@redhat.com
>
Colin
Walters
Red Hat, Inc.
<walters@redhat.com
>
Version 0.5.0
Table of Contents
Tutorial Work In Progress
What is D-Bus?
D-Bus applications
Concepts
Native Objects and Object Paths
Methods and Signals
Interfaces
Proxies
Bus Names
Addresses
Big Conceptual Picture
Messages - Behind the Scenes
Calling a Method - Behind the Scenes
Emitting a Signal - Behind the Scenes
Introspection
GLib API: Using Remote Objects
D-Bus - GLib type mappings
A sample program
Program initalization
Understanding method invocation
Connecting to object signals
Error handling and remote exceptions
More examples of method invocation
Generated Bindings
GLib API: Implementing Objects
Server-side Annotations
Python API
Qt API: Using Remote Objects
Qt API: Implementing Objects
Tutorial Work In Progress
This tutorial is not complete; it probably contains some useful information, but
also has plenty of gaps. Right now, you'll also need to refer to the D-Bus specification,
Doxygen reference documentation, and look at some examples of how other apps use D-Bus.

Enhancing the tutorial is definitely encouraged - send your patches or suggestions to the
mailing list. If you create a D-Bus binding, please add a section to the tutorial for your
binding, if only a short section with a couple of examples.

What is D-Bus?
D-Bus is a system for interprocess communication
(IPC). Architecturally, it has several layers:

A library, libdbus
, that allows two
applications to connect to each other and exchange messages.

A message bus daemon
executable, built on
libdbus, that multiple applications can connect to. The daemon can