A NEW USER INTERFACE DESCRIPTION MODEL BASED ON POP UP STN

In view of existing problems in the domain of user interface, this paper makes a thorough study on several user interface description models and introduces a new concept-Pop up STN (State Transition Network). From the object oriented point of view, Pop up STN and event handler model of describing user interface are well combined to form a new description model which improves many aspects of user interface description. In the model, the user interface is considered as a complex object-STN, and all the components of the user interface are also described as some types of objects whose definitions are given in the paper. Based on the model, an object oriented user interface tool has been implemented on the SGI workstations. The tool has been applied to some real systems effectively.