event handler


Also found in: Dictionary, Thesaurus, Medical, Financial, Wikipedia.

event handler

A software routine that provides the processing for various events such as mouse movement, a mouse click, a keystroke or a spoken word. See event, event driven and event management system.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
The return to the event handler is indicated by execution of the instruction retesr (return from the event service routine), which causes activation of the ret_esr, indicating to the P[C.sub.i] to load the return address of BackUp_PC register, continuing the normal execution of the program.
This rule forbids inline <script> tags and inline event handlers (e.g., handler for a button's onClick event).
This gets you an event handler macro that will run every time any pivot table on the sheet is updated.
The End Access Event handler is only generated by the master-side interface modules.
* Event Handler: The Event Handler translates the event to a command and then performs the corresponding action.
Notice how we are using the information passed from the "onclick" event handler. When a user clicks on the link from our XHTML page the createRequest function begins and uses "xml/worldcat.xml" as the value for the "url" variable.
State transitions are implemented through a mechanism of events and event handlers, completing the finite state machine.
During normal operation, a system frequently reaches states in its execution where an event handler could be invoked with minimal overhead.
For the event handler, your programming in the Block editor will look like the example inset below.
Such semantics can simplify microprotocol code in certain cases when execution order is important, such as when a subsequent event handler depends on a side effect caused by a previously executed handler.
This pattern simplifies event-driven applications by decoupling event demultiplexing and event handler dispatching from application services performed in response to events.
While you can't use the macro recorder to solve this problem, you'll be typing a tiny bit of VBA code to create something called an Event Handler. In our particular case, we'll create a macro that will run every time a value is typed in Sheet1 of our workbook.