IMPLEMENTING A GRAPHICAL MULTIUSER INTERFACE TOOLKIT

Multi-user applications allows users in different locations to simulta neously interact with a common interface. Creating multi-user applicat ions is complicated by issues such as process synchronization, replica ted window management, and floor control. As a result, several papers describing toolkits that simplify programming of multi-user applicatio ns have appeared in the literature. This paper discusses several low-l evel issues that must be addressed when implementing such a toolkit. I ssues relating to replicated window management, supporting heterogeneo us hardware environments, and multi-user event handling are discussed.