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Visual Basic 2005 for Programmers: Deitel Developer Series, Second Edition by Harvey M. Deitel - Deitel & Associates, Inc., Paul J. Deitel - Deitel & Associates, Inc.

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13.3. Event Handling

Normally, a user interacts with an application’s GUI to indicate the tasks that the application should perform. For example, when you write an e-mail in an e-mail application, clicking the Send button tells the application to send the e-mail to the specified e-mail addresses. GUIs are event driven. When the user interacts with a GUI component, the interaction—known as an event—drives the program to perform a task. Common events (user interactions) that might cause an application to perform a task include clicking a Button, typing in a TextBox, selecting an item from a menu, closing a window and moving the mouse. A method that performs a task in response to an event is called an event handler, and the overall process of responding ...

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