Chapter 19: Understanding Excel's Events

IN THIS CHAPTER

Recognizing the types of events that Excel can monitor

Figuring out what you need to know to work with events

Exploring examples of Workbook events, Worksheet events, Chart events, and UserForm events

Using Application events to monitor all open workbooks

Seeing examples of processing time-based events and keystroke events

What You Should Know about Events

In several earlier chapters in this book, I present examples of VBA event-handler procedures, which are specially named procedures that are executed when a specific event occurs. An example is the CommandButton1_Click procedure that is executed when the user clicks an object named CommandButton1 stored on a UserForm or on a worksheet. Clicking the button is an event that triggers the execution of the event-handler VBA code.

Excel is programmed to monitor many different events that occur. These events can be classified as the following:

Workbook events: Events that occur for a particular workbook. Examples of such events include Open (the workbook is opened or created), BeforeSave (the workbook is about to be saved), and NewSheet (a new sheet is added).

Worksheet events: Events that occur for a particular worksheet. Examples include Change (a cell on the sheet is changed), SelectionChange (the user moves the cell indicator), and Calculate (the worksheet is recalculated).

Chart events: Events that occur for a particular chart. These events include Select ...

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