Visual Basic: Writeup example
Your writeup will contain your interface rough
sketch, a use-case scenario, and details about
how output will be handled.
The purpose of a use-case scenario is to reveal design flaws
in a system by telling a story of how a real person
would use it. The following is a use-case scenario
of someone using the VB demo shown below.
Sally wants to sample some music. After looking at the choices
of artists, she selects the option button for Yanni.
This causes the display to show a picture of Yanni in a Picturebox,
a blurb about Yanni in a text box, and two of Yanni's
songs in the Playlist Listbox. She changes her mind and selects
the Gopher Buckets option button instead.
This causes a new picture, blurb, and
playlist to appear. She highlights the first song clip in the
playlist and presses the Play button to hear it.
She then highlights the second song clip and presses Play.
Liking both tracks, she selects two checkboxes at the
bottom of the screen and then presses Make Purchase
to complete the purchase. A dialogue box is then displayed
showing the total amount owed. After pressing "OK" on
the dialogue box, Sally presses the Clear all choices
button on the form which resets the entire form. She then
goes to the cashier.
Comment about output
Fleshing out a story like this can force you to see details you
may have missed. Once Make Purchase is clicked, how
does the user see her total? The demo uses dialogue boxes,
but that doesn't mean you have to. Perhaps an uneditable text
field is better. If so, have you created such a text field?
Be sure to address output in your writeup.
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