Glade is not hard to learn, and for programmers, there isn't much to see beyond the few API functions. However, this book has left out a few things:
Generating code . As you might guess from terminology such as "Project," Glade can generate more than a little .glade file. If you check more options in the Project Options window, then Glade constructs an entire Autotools- configurable source tree when you select Project > Build from the main menu bar. You need only fill in your own code.
Here's the catch: It's a one-way street. You can't go from a source tree back to a .glade file, and therefore, it's hard to go back and change something in the interface. This feature may be good for generating quick one-off bits of code, but that's about all.
Multilanguage support . Glade can generate code for languages other than C, such as Python, Perl, C++, Eiffel, and Ada.
Accessibility . Glade's property editor has a tab for ATK settings. Most of these settings supply additional information about a widget so that they can better interface with screen readers, voice recognition systems, and other such tools. This book does not cover ATK, so a description of the ATK settings in Glade would not be particularly enlightening here, either.