| Brad A. Myers. "Creating Interaction Techniques by Demonstration". IEEE Computer Graphics and Applications 7, 9 (Sept. 1987), 51-60. |
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Brad A. Myers. "Creating Interaction Techniques by Demonstration". IEEE Computer Graphics and Applications 7, 9 (Sept. 1987), 51-60.
....in a direct manipulation manner using a mouse. Often, these systems allow a few limited properties to be changed using a dialog box. Lapidary also provides the ability to create and align pre defined widgets using its drawing and constraint editors. 2. 2 Widget Builders The Peridot system [21, 22] supports creating the widgets themselves using direct manipulation. It provides a drawing editor that allows a user to create widgets with many different types of looks andfeels. It also provides an inferencing facility that helps align objects and attempts to guess the behaviors the widgets ....
....must be specified. Lapidary 8 2.5 Constraint Builders Much of the behavior in Lapidary is specified using constraints on objects. A constraint is a relationship among objects that is defined once and then maintained automatically by the system, even when the objects change. Like Peridot [21] and Apogee [8] Lapidary uses one way constraints, which means that a property of one object (e.g. the LEFT of object A) can depend on another object (B.LEFT) but the reverse is not implied (if B.LEFT changes, A.LEFT is changed automatically, but if A.LEFT is 2 changed, B.LEFT is not changed ....
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Brad A. Myers. "Creating Interaction Techniques by Demonstration". IEEE Computer Graphics and Applications 7, 9 (Sept. 1987), 51-60.
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Myers, B. Creating Interaction Techniques by Demonstration . IEEE Computer Graphics and Applications, Sept. 1987, pp. 51-60.
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