[PDF] event handling definition computer

In programming, an event handler is a callback routine that operates asynchronously once an event takes place. It dictates the action that follows the event. The programmer writes a code for this action to take place. An event is an action that takes place when a user interacts with a program.
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  • What is the meaning of event handling in computer?

    Event Handling is the mechanism that controls the event and decides what should happen if an event occurs.
    This mechanism have the code which is known as event handler that is executed when an event occurs.
    Java Uses the Delegation Event Model to handle the events.

  • What is event handler with example?

    In general, an event handler has the name of the event, preceded by "on." For example, the event handler for the Focus event is onFocus.
    Many objects also have methods that emulate events.
    For example, button has a click method that emulates the button being clicked.

  • What is event and event handling in computer graphics?

    Event-handling is a critical part of any visual application, where users communicate with the application through dialogs and other windows.
    Events are handled differently for controls than for general windows.
    Events on controls are discussed in the IDE User Guide, chapter 8 (Chapter 8 of the IDE User Guide).

  • What is event and event handling in computer graphics?

    An event is a signal that informs an application that something important has occurred.
    For example, when a user clicks a control on a form, the form can raise a Click event and call a procedure that handles the event.

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