Excel 2007 VBA Programmers Reference Wrox P1

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Excel
®
2007 VBA
Programmer’s Reference
John Green
Stephen Bullen
Rob Bovey
Michael Alexander
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Excel
®
2007 VBA
Programmer’s Reference
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Excel
®
2007 VBA
Programmer’s Reference
John Green
Stephen Bullen
Rob Bovey
Michael Alexander
01_046432 ffirs.qxp 2/16/07 9:52 PM Page iii
Excel®2007 VBA Programmer’s Reference
Published by
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Copyright © 2007 by Wiley Publishing, Inc., Indianapolis, Indiana
Published simultaneously in Canada
ISBN: 978-0-470-04643-2
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Library of Congress Cataloging-in-Publication Data

Excel 2007 VBA programmer’s reference / John Green ... [et al.].
p. cm.
Includes index.
ISBN 978-0-470-04643-2 (paper/website)
1. Microsoft Excel (Computer file) 2. Business—Computer programs. I. Green, John, 1945-
HF5548.4.M523E92988 2007
005.54—dc22
2007004976
Trademarks: Wiley, the Wiley logo, Wrox, the Wrox logo, Programmer to Programmer, and related trade dress are
registered trademarks of John Wiley & Sons, Inc. and/or its affiliates, in the United States and other countries, and
may not be used without written permission. Microsoft and Excel are registered trademarks of Microsoft Corpora-
tion in the United States and/or other countries. All other trademarks are the property of their respective owners.
Wiley Publishing, Inc., is not associated with any product or vendor mentioned in this book.
Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be
available in electronic books.
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About the Authors
John Green lives and works in Sydney, Australia, as an independent computer consultant, specializing in
Excel and Access. He has 35 years of computing experience, a Chemical Engineering degree, and an MBA.
He wrote his first programs in FORTRAN, took a part in the evolution of specialized planning languages
on mainframes and, in the early ‘80s, became interested in spreadsheet systems, including 1-2-3 and Excel.
John established his company, Execuplan Consulting, in 1980, specializing in developing computer-
based planning applications and in training. He has led training seminars for software applications and
operating systems both in Australia and overseas.
John has had regular columns in a number of Australian magazines and has contributed chapters to a num-
ber of books including Excel Expert Solutions and Using Visual Basic for Applications 5. He also co-authored
Professional Excel Development with Stephen Bullen and Rob Bovey.
From 1995 to 2005 he was accorded the status of MVP (Most Valuable Professional) by Microsoft for his
contributions to the CompuServe Excel forum and MS Internet newsgroups.
John Green contributed the Introduction, Chapters 1–11, 13, 15–17, and 19 to this book.

Stephen Bullen lives in Woodford Green, London, England, with his partner Clare, daughter Becky, and
their dogs, Fluffy and Charlie. He has two other daughters, Jane and Katie, from his first marriage.
A graduate of Oxford University, Stephen has an MA in Engineering, Economics, and Management,
providing a unique blend of both business and technical skills. He has been providing Excel consulting
and application development services since 1994, originally as an employee of Price Waterhouse
Management Consultants and later as an independent consultant trading under the names of Business
Modelling Solutions Limited and Office Automation Limited. Stephen now works for Barclays Capital in
London, developing trading systems for complex exotic derivative products.
The Office Automation web site,
www.oaltd.co.uk
, provides a number of helpful and interesting utili-
ties, examples, tips and techniques to help in your use of Excel and development of Excel applications.
As well as co-authoring previous editions of the Excel VBA Programmer’s Reference, Stephen co-authored
Professional Excel Development.
In addition to his consulting and writing assignments, Stephen actively supports the Excel user community
in Microsoft’s peer-to-peer support newsgroups and the Daily Dose of Excel blog. In recognition of his
knowledge, skills and contributions, Microsoft has awarded him the title of Most Valuable Professional
each year since 1996.
Stephen Bullen contributed Chapters 14, 18, 24–27, and Appendix B to this book.
Rob Bovey is president of Application Professionals, a software development company specializing in
Microsoft Office, Visual Basic, and SQL Server applications. He brings many years’ experience creating
financial, accounting, and executive information systems for corporate users to Application
Professionals. You can visit the Application Professionals web site at
www.appspro.com
.
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Rob developed several add-ins shipped by Microsoft for Microsoft Excel and co-authored the Microsoft
Excel 97 Developers Kit and Professional Excel Development. He earned his Bachelor of Science degree from
The Rochester Institute of Technology and his MBA from the University of North Carolina at Chapel
Hill. He is a Microsoft Certified Systems Engineer (MCSE) and a Microsoft Certified Solution Developer

(MCSD). Microsoft has awarded him the title of Most Valuable Professional each year since 1995.
Rob Bovey contributed Chapters 20–22 to this book.
Michael Alexander is a Microsoft Certified Application Developer (MCAD) with more than 14 years’
experience consulting and developing office solutions. He parlayed his experience with VBA and VB
into a successful consulting practice in the private sector, developing middleware and reporting solu-
tions for a wide variety of industries. He currently lives in Frisco, Texas, where he serves as a Senior
Program Manager for a top technology firm. Michael is the author of several books on Microsoft Access
and Excel, and is the principle behind DataPig Technologies, where he shares Access and Excel knowl-
edge with the Office community.
Michael Alexander contributed Chapters 12 and 23 and Appendices A and C to this book.
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Credits
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Contents
Acknowledgments xxi
Introduction xxiii
Chapter 1: Primer in Excel VBA 1
Using the Macro Recorder 2
Recording Macros 2
Running Macros 6
The Visual Basic Editor 8
Other Ways to Run Macros 11
User-Defined Functions 17
Creating a UDF 18

What UDFs Cannot Do 21
The Excel Object Model 21
Objects 22
Getting Help 27
Experimenting in the Immediate Window 29
The VBA Language 30
Basic Input and Output 30
Calling Functions and Sub Procedures 35
Parentheses and Argument Lists 37
Variable Declaration 38
Scope and Lifetime of Variables 40
Variable Type 42
Object Variables 45
Making Decisions 47
Looping 50
Arrays 55
Run-Time Error-Handling 59
Summary 62
Chapter 2: The Application Object 63
Globals 63
The Active Properties 64
Display Alerts 65
Screen Updating 66
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