1. A creation supporting apparatus of a graphical user interface program comprising: processing program creating means for creating a processing program for an individual object constituting a graphical user interface; screen layout creating means for creating a screen layout of said graphical user interface by arranging various objects; relating means for relating a variable and a method in said processing program, with the objects arranged in said screen layout; and program generating means for generating, based on the relation between said variable and method, and the objects, a program in which said processing program is related with the objects.