GtkAda comprises an API based on the GNU gtk toolkit, a comprehensive widget set, and a GUI builder. The product also comes with numerous examples and comprehensive documentation, which help new users quickly learn how to use the API effectively. The underlying Gtk Toolkit is used in the GNOME/Linux interface and will be used in desktop environments provided by HP, SGI, IBM and Sun. GtkAda’s API is an Ada implementation of this C library, taking advantage of advanced Ada 95 features such as tagged types, generic packages, access-to-subprogram types, and exceptions. It thus provides type safety (particularly for callbacks) and Object-Oriented Programming, in contrast to the C version of the Gtk functions.
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