Human-Computer Interaction 3e Dix, Finlay, Abowd, Beale
A designer described the following interface
for a save operation.
The users initially see a screen with a box where they can type the file name (see screen 1). The screen also has 'list' button that they can use to obtain a listing of all the files in the current directory (folder). This list appears in a different window. When the user clicks the 'save' button the system presents a dialogue box to ask the user to confirm the save (see screen 2).
Two programmers independently coded the interface using two different window managers. Programmer A used an event-loop style of program whereas programmer B used a notifier (callback) style.
(a) Sketch out the general structure
of each program.
(b) Highlight any potential interface problems you expect from each programmer and how they could attempt to correct them.
answer available for tutors only
Other exercises in this chapter
ex.8.1 (ans), ex.8.2 (ans), ex.8.3 (tut), ex.8.4 (tut), ex.8.5 (tut)
all exercises for this chapter