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
  • 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
    • Option Buttons
    • Frames and Option Buttons
    • Check Boxes
    • Scrollbars
    • VB's Clock: The Timer Control
    • Summary
    • Q&A
    • Workshop
  • 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

Check Boxes

Figure 11.5 shows a form with check boxes. The Check Box control works just like the option button, with two differences: A selected check box shows the selection with a check mark, and check boxes are never mutually exclusive. Therefore, the user can select one or more check boxes even if those check boxes reside in the same frame or on the same form.

Figure 11.5 A Form with two check boxes.

The Check Box control supports the same fundamental properties as the option button, except that the Value property determines not only if the box is checked (if 1) or unchecked (if 0), but also if it is grayed (if the Value property contains 2). Users sometimes use a grayed check box to determine whether part of a selected option is true. In addition, the programmer may gray out a box to show that the selection is unavailable under the current conditions.

Visual Basic version 5 added a new Style value to the Check Box control's property list. The available Style property values are 0-Standard and 1-Graphical. The graphical style value makes the check box look a lot like a command button that stays pressed (when selected) or unpressed (when not selected).

Figure 11.6 shows a form that illustrates the various Check Box property options available to you.

Figure 11.6 Some Check Box control property options.

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