GTK+ 2.0 book recommendation?

[Andrew Springman <andrew mtiemail com>]

Hi all,

Please excuse me for asking such a common question.  I am unable to 
search the archive because it is being re-indexed.

I'm looking for a good book on GTK+ 2.0

We are porting an embedded GHS INTEGRITY application to an embedded 
linux platform.  I'm porting the UI task to GTK+ 2.0.  For rapid 
development I'm creating a version that runs on GNOME as well as one on 
the embedded system that writes directly to the frame buffer.  I need to 
receive data on a POSIX messesage queue.  This data is everything from 
barcode data with which I'll fill in GtkEntry fields to proprietarty 
screen descriptions with which I redraw the entire screen or do things 
that don't affect the screen at all.  So, I want to understand how to 
convert those incoming messages to GTK/GDK/GLIB events and/or signals.

I can see all the pieces in the references and I can read code to see 
how the libraries themselves achieve similar things.  However, I'm 
desperate for an overall understanding.

I've already got:
"Understanding the LINUX Kernel"
"Embedded LINUX System Design and Development"

I looked at:
"Gtk+ Programming in C" by Syd Logan but it appeared to cover GTK+ 1.2.
"Developing Linux Applications with GTK+ and GDK" by Eric Harlow was 
published two years earlier.
"The Official GNOME 2 Developer's Guide" by Matthias Warkus is recent, 
but I don't know how deeply it goes into POSIX and GtkFB

Blessings,
Andrew