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Graphical User Interface


For example, when a new projection is selected, the map is redrawn. When the cursor is moved over the map, the position display is updated. To create a GUI application, you need to arrange appropriate widgets in a sensible way, and then provide code that handles user interaction.


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For example, event-based models such as ESGs are used for testing of web service compositions, and, also, there are formalisms which can be alternative/complementary to the finite-state-machine-based approaches in fault-based testing. A GUI allows the user of a computer to communicate with the computer by moving a pointer around on a screen and clicking a button. Although Apple was the first to mass-produce a successful GUI, they were not the inventors of the idea, nor were they the first to market it. The honour for implementing the first working GUI goes to Doug Englebart – at the time an employee of Stanford Research Institute. The Xerox Palo Alto Research Center was convinced that Englebart’s model would work on computers available for individual work stations, and they created two working models, the Alto and the Star. The Star was made available to the public, mouse and all, in 1981.

Why is GUI interface so popular?

Most people will be attracted to GUIs because they are cognitively easier to use. Command line interfaces force you to memorize and recall commands in order to do anything. Even to conjure up a help menu or a list of commands, you must know what to type.

The command prompt allows you to issue commands directly to the program. The application responds to interaction with each widget in different ways.

The primary goal of a GUI is to allow the user to concentrate on the task at hand. To do this, the GUI must make the interface between the human and the computer seamless. Modern GUIs adhere to one of three de facto standards, which are the Apple Macintosh, the IBM SAA, and the MIT X-Windowing System. These standards are not perfect, but they are good enough to preclude major deviation.

a graphical user interface

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But the hardware setup required to operate it was very expensive, and they sold only 25,000 of them. But this was the first GUI-based operating system available to the public. If the functionality that the user needs is not present, then the user must know the commands that are necessary to proceed with the flow or else they are just stuck with it at the exact point. When designing GUI, one need to keep the objectives of the GUI in mind and to generally avoid needless complexity .One must avoid useless innovation and concentrate on improvements that enhance performance. Future trends in GUI are toward voice recognition and hypertext format language . The hypertext trend allows the user to move directly from data and concepts in one application to similar data and concepts in other application. These trends will further remove the GUI as an obstacle between the user and the task.

What does GUI do for computers?

Graphical user interface (GUI), a computer program that enables a person to communicate with a computer through the use of symbols, visual metaphors, and pointing devices.

Examples include breadcrumbs, sliders, search boxes, pagination, and tags. They arrange the commands available in an application into logical groups. Windows can be moved, resized, and placed in front of each other. The command prompt is located below the Utility Menu and to the right of the Standard Toolbar.

  • Good user interface design relates to users more, and to system architecture less.
  • The graphical user interface is presented on the computer screen.
  • This allows users to select or design a different skin at will, and eases the designer’s work to change the interface as user needs evolve.
  • Large widgets, such as windows, usually provide a frame or container for the main presentation content such as a web page, email message, or drawing.
  • It is the result of processed user input and usually the main interface for human-machine interaction.

These two aspects of a GUI—the appearance and layout of widgets, and their response to user interaction—reflect the essence of GUI programming. The primitiveness of most GUI tools is a problem because many GUIs are not designed by UI professionals. Rather, they are quickly assembled on tight deadlines by programmers who lack the UI expertise necessary to compensate for the lack of guidance from the toolkits. On the other hand, the approaches proposed for GUI testing can also be used for other types of software applications with certain adjustments depending on the application area. As mentioned earlier, if user–system interactions can be formulated in the form of events, most of the approaches proposed for GUI testing can be used.