OBJECT-ORIENTED IMPLEMENTATION OF THE OSF MOTIF(TM) WIDGET SET IN EIFFEL/

The OSF/Motif and the X window system are rapidly becoming the de fact o industry standard for the construction of GUI (Graphical User Interf ace) that would work identically on a wide variety of platforms, from high end PC's to workstations and super computers. The OSF/Motif widge ts were developed on top of the X toolkit which had adopted the Object -Oriented paradigm in its design but not in its implementation. This p aper describes the implementation of the Motif widget set in Eiffel, a n object-oriented language and highlights the strengths and weaknesses of adopting a full object-oriented approach to toolkit implementation .