Graphic Libraries for The User Interface KwangWoo Choi Department of Physics Kangwon National University  Graphic Libraries Motif: The base graphical user interface toolkit for the Common Desktop Environment (CDE). CDE is a traditional window manager in X Window system. GTK+: Most powerful and popular multi-platform graphic toolkit for creating graphical user interfaces.

Introduction to Motif Motif is also the base graphical user interface toolkit for the Common Desktop Environment (CDE). CDE is a standard graphical desktop and desktop tool set for all platforms that support the X Window System. • Merit: Graphic Library written by ANSI C. Support high portability with the existing numerical package. • Weak point: Old-style graphic library. Commercial package. • LessTif: Free graphic library corresponding to Motif. Typical applications in Motif

Introduction to GTK+ • GTK+ is a multi-platform toolkit for creating graphical user interfaces. GTK+ is free software and part of the GNU Project. • Merit: Recently, most powerful and popular graphic library. • Weak point: GTK is essentially an object oriented API. Low portability with the existing numerical package. Typical applications in GTK+

Summary • Motif is a old-style graphic library, but supports high portability with the existing numerical package. • GTK+ is most powerful and popular graphic library, but written in the concept of the object-oriented API. It supports low portability with the existing package. • Develop the user interface in both graphic library, and select the suitable graphic library for the development of the numerical computation package.