Event (computing)

（重定向自Event handler）

Delegate event model. clickme is the event source –a button in this example–, and it contains a list of listeners.

In computing, an event is an action or occurrence recognised by software that may be handled by the software. Computer events can be generated or triggered by the system, by the user or in other ways. Typically, events are handled synchronously with the program flow, that is, the software may have one or more dedicated places where events are handled, frequently an event loop. A source of events includes the user, who may interact with the software by way of, for example, keystrokes on the keyboard. Another source is a hardware device such as a timer. Software can also trigger its own set of events into the event loop, e.g. to communicate the completion of a task. Software that changes its behavior in response to events is said to be event-driven, often with the goal of being interactive.

单词	Event handler
释义	Event handler 英语例句库 In this case, the default event handler does not cause a postback. 在这种情况下，默认的事件处理不造成传。原声例句科技 Crash Course The type of event, in this case, is a click event, and our function is the event handler for that event. 在这种情况下，事件类型是点击事件，我们的函数是该事件的事件处理程序。英语百科 Event (computing) （重定向自Event handler） In computing, an event is an action or occurrence recognised by software that may be handled by the software. Computer events can be generated or triggered by the system, by the user or in other ways. Typically, events are handled synchronously with the program flow, that is, the software may have one or more dedicated places where events are handled, frequently an event loop. A source of events includes the user, who may interact with the software by way of, for example, keystrokes on the keyboard. Another source is a hardware device such as a timer. Software can also trigger its own set of events into the event loop, e.g. to communicate the completion of a task. Software that changes its behavior in response to events is said to be event-driven, often with the goal of being interactive.
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