Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Qt is a cross platform application development framework which is widely used for the development of GUI and non-GUI programs. Some of the most visible products which have been developed using Qt are KDE, Opera web browser, Google Earth, Skype and Photoshop Elements just to name a few.
"C++ GUI Programming with Qt4" authored by Jasmin Blanchette and Mark Summerfield; published under the Prentice Hall Open source software development series is well into its second edition. This book is touted as the "Official book on Qt from Trolltech".
The main goal of this book is to teach how to write GUI programs using Qt4 and is targeted at the entry level to intermediate and advanced C++ programmer. So it starts off on a shallow curve.