libgtk3.0-bin 2.99.3-0ubuntu1 (i386 binary) in ubuntu natty

 The GTK+ is a multi-platform toolkit for creating graphical user
 interfaces. Offering a complete set of widgets, the GTK+ is suitable
 for projects ranging from small one-off tools to complete application
 suites.
 .
 This package contains the program files which is used for the libraries
 and others.