Sams Teach Yourself Visual Basic 6 in 24 Hours

By Greg Perry

• Table of Contents
  • Copyright
  • About the Author
  • Acknowledgments
  • Introduction
  • Who Should Read This Book
  • What This Book Will Do for You
  • Can This Book Really Teach Visual Basic in 24 Hours?
  • What You Need
  • Files on the Visual Basic Distribution CD-ROM
  • Conventions Used in This Book
  • Enough! Time Is Ticking!
  • Part I: Introducing Visual Basic
  • Hour 1. Visual Basic at Work
  • Hour 2.Analyzing Visual Basic Programs
    • Event-Driven Programs
    • Control Events
    • Analyzing Sample Applications
    • Naming Objects
    • Running Applications
    • Where's the Code?
    • Event Procedures
    • Properties and Event Procedures
    • Generating an Application from Scratch
    • Summary
    • Q&A
    • Workshop
  • Hour 3.Controls and Properties
  • Hour 4.Examining Labels, Buttons, and Text Boxes
  • Part II: Coding the Details
  • Hour 5.Putting Code into Visual Basic
  • Hour 6.Message and Input Boxes
  • Hour 7.Making Decisions
  • Hour 8.Visual Basic Looping
  • Part III:Putting Code to Work
  • Hour 9.Combining Code and Controls
  • Hour 10.List Boxes and Data Lists
  • Hour 11.Additional Controls
  • Hour 12.Dialog Box Basics
  • Part IV:Programming with Data
  • Hour 13.Modular Programming
  • Hour 14.Built-In Functions Save Time
  • Hour 15.Visual Basic Database Basics
  • Hour 16.Printing with Visual Basic
  • Part V:Sprucing Up Programs
  • Hour 17.Menus and Visual Basic
  • Hour 18.The Graphic Image Controls
  • Hour 19.Toolbars and More Graphics
  • Hour 20.Writing Correct Applications
  • Part VI:Advancing Visual Basic Applications
  • Hour 21.Visual Basic and ActiveX
  • Hour 22.Object Basics
  • Hour 23.Distributing Your Applications
  • Hour 24.Online Visual Basic
  • Part VII:Appendixes
  • Appendix A.Operator Precedence
  • Appendix B.Answers
  • Appendix C.Using the CD-ROM

Control Events

Every control you place on a form supports one or more events. For example, if you place a text box in the center of the Form window and run the program, you can click the text box, enter text in the text box, double-click the text box, and ignore the text box. The Text Box control happens to support events that can recognize when you've done anything to the control.

If you've written an event procedure for that text box's event, your code's instructions will execute automatically as soon as the event occurs. Therefore, if you've written code to blank out the text box as soon as the user clicks the text box and you've written another event procedure for the double-click event that fills the text box with Xs when the user double-clicks the text box, the text box fills with blanks or Xs when you run the program and click or double-click the text box.

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