12BUILDING GRAPHICAL USER INTERFACES
Every device has a set of interfaces. For example, an interface could be the buttons on a microwave or in an elevator, the knobs on a dishwasher, or even the soda pop dispenser at your favorite burger joint. Computer programs have interfaces as well. Back in the day, programs had only text menus, but now we use different ways to interact with computers, such as the icons on your desktop.
Although you’ve written some very useful programs in this book, they don’t look like the programs you’re used to, such as a word processor, a paint program, a web browser, video games, and so on.
Today, most programs use a ...
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