The potential for using stroke gestures to enter, retrieve and select commands and text has
been recently unleashed by the popularity of touchscreen devices. This monograph …

Procedural art, or art made with programming, suggests opportunities to extend traditional
arts like painting and drawing; however, this potential is limited by tools that conflict with …

Graphical user interfaces (GUIs) are integral parts of software systems that require
interactions from their users. Software testers have paid special attention to GUI testing in …

Targets of only a few pixels are notoriously difficult to acquire. Despite many attempts at
facilitating pointing, the reasons for this difficulty are poorly understood. We confirm a strong …

This article introduces runtime toolkit overloading, a novel approach to help third-party
developers modify the interaction and behavior of existing software applications without …

Interactive behaviors in GUIs are often described in terms of states, transitions, and
constraints, where the constraints only hold in certain states. These constraints maintain …

Technical HCI research seeks to improve the world by expanding the set of things that can
be done with computational systems. This chapter considers this work as invention—the …

InterState is a new programming language and environment that addresses the challenges
of writing and reusing user interface code. InterState represents interactive behaviors clearly …

Ensuring the effectiveness factor of usability consists in ensuring that the application allows
users to reach their goals and perform their tasks. One of the few means for reaching this …

This paper introduces a new Graphical User Interface (GUI) and Interaction framework
based on the Entity-Component-System model (ECS). In this model, interactive elements …