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IVOR HORTON’S
BEGINNING VISUAL C++® 2010
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxiii
CHAPTER 1
Programming with Visual C++ 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CHAPTER 2
Data, Variables, and Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
CHAPTER 3
Decisions and Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
CHAPTER 4
Arrays, Strings, and Pointers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
CHAPTER 5
Introducing Structure into Your Programs . . . . . . . . . . . . . . . . . . . . . . . . 251
CHAPTER 6
More about Program Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
CHAPTER 7
Defining Your Own Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
CHAPTER 8
More on Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435
CHAPTER 9
Class Inheritance and Virtual Functions . . . . . . . . . . . . . . . . . . . . . . . . . 549
CHAPTER 10
The Standard Template Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 645
CHAPTER 11
Debugging Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 755
CHAPTER 12
Windows Programming Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 807
CHAPTER 13
Programming for Multiple Cores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 843
CHAPTER 14
Windows Programming with the Microsoft Foundation Classes . . . . . 875
CHAPTER 15
Working with Menus and Toolbars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 903
CHAPTER 16
Drawing in a Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 945
CHAPTER 17
Creating the Document and Improving the View . . . . . . . . . . . . . . . . . 1009
CHAPTER 18
Working with Dialogs and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1059
CHAPTER 19
Storing and Printing Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1123
CHAPTER 20
Writing Your Own DLLs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1175
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1193
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IVOR HORTON’S
BEGINNING
Visual C++® 2010
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IVOR HORTON’S
BEGINNING
Visual C++® 2010
Ivor Horton
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Ivor Horton’s Beginning Visual C++® 2010
Published by
Wiley Publishing, Inc.
10475 Crosspoint Boulevard
Indianapolis, IN 46256
www.wiley.com
Copyright © 2010 by Ivor Horton
Published by Wiley Publishing, Inc., Indianapolis, Indiana
Published simultaneously in Canada
ISBN: 978-0-470-50088-0
Manufactured in the United States of America
10 9 8 7 6 5 4 3 2 1
No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means,
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Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201)
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respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including
without limitation warranties of fitness for a particular purpose. No warranty may be created or extended by sales or
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the publisher nor the author shall be liable for damages arising herefrom. The fact that an organization or Web site is
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are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affi liates, in the United States and
other countries, and may not be used without written permission. Visual C++ is a registered trademark of Microsoft
Corporation 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.
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This book is for Edward Gilbey, who arrived in
September 2009 and has been a joy to have around ever since.
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ABOUT THE AUTHOR
IVOR HORTON graduated as a mathematician and was lured into information
technology by promises of great rewards for very little work. In spite of the
reality usually being a great deal of work for relatively modest rewards,
he has continued to work with computers to the present day. He has been
engaged at various times in programming, systems design, consultancy, and
the management and implementation of projects of considerable complexity.
Horton has many years of experience in the design and implementation
of computer systems applied to engineering design and manufacturing
operations in a variety of industries. He has considerable experience in developing occasionally
useful applications in a wide variety of programming languages, and in teaching scientists and
engineers primarily to do likewise. He has been writing books on programming for more than 15
years now, and his currently published works include tutorials on C, C++, and Java. At the present
time, when he is not writing programming books or providing advice to others, he spends his time
fishing, traveling, and enjoying life in general.
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ABOUT THE TECHNICAL EDITOR
MARC GREGOIRE is a software engineer from Belgium. He graduated from the Catholic University
Leuven, Belgium, with a degree in “Burgerlijk ingenieur in de computer wetenschappen” (equivalent
to Master of Science in Engineering in Computer Science). After that, he received the cum laude
degree of Master in Artificial Intelligence at the same university, started working for a big software
consultancy company (Ordina: ). His main expertise is C/C++, specifically
Microsoft VC++ and the MFC framework. Next to C/C++, Marc also likes C# and uses PHP
for creating web pages. In addition to his main interest for Windows development, he also has
experience in developing C++ programs running 24x7 on Linux platforms, and in developing critical
2G and 3G software running on Solaris for big telecom operators.
In April of the years 2007, 2008, and 2009 he received the Microsoft MVP (Most Valuable
Professional) award for his Visual C++ expertise.
Marc is an active member on the CodeGuru forum (as Marc G) and also wrote some articles
and FAQ entries for CodeGuru. He creates freeware and shareware programs that are distributed
through his website at www.nuonsoft.com and maintains a blog on www.nuonsoft.com/blog/.
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CREDITS
EXECUTIVE EDITOR
VICE PRESIDENT AND EXECUTIVE GROUP
PUBLISHER
Robert Elliott
Richard Swadley
PROJECT EDITOR
John Sleeva
VICE PRESIDENT AND EXECUTIVE PUBLISHER
Barry Pruett
TECHNICAL EDITOR
Marc Gregoire
ASSOCIATE PUBLISHER
Jim Minatel
PRODUCTION EDITOR
Eric Charbonneau
PROJECT COORDINATOR, COVER
Lynsey Stanford
COPY EDITOR
Sadie Kleinman
PROOFREADERS
Maraya Cornell and Paul Sagan, Word One
EDITORIAL DIRECTOR
Robyn B. Siesky
INDEXER
Johnna VanHoose Dinse
EDITORIAL MANAGER
Mary Beth Wakefield
COVER DESIGNER
Michael E. Trent
MARKETING MANAGER
Ashley Zurcher
COVER IMAGE
©istockphoto
PRODUCTION MANAGER
Tim Tate
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ACKNOWLEDGMENTS
THE AUTHOR IS ONLY ONE MEMBER of the large team of people necessary to get a book into print.
I’d like to thank the John Wiley & Sons and Wrox Press editorial and production teams for their
help and support throughout.
I would particularly like to thank my technical editor, Marc Gregoire, for doing such an
outstanding job of reviewing the text and checking out all the code fragments and examples in the
book. His many constructive comments and suggestions for better ways of presenting the material
has undoubtedly made the book a much better tutorial.
As always, the love and support of my wife, Eve, has been fundamental to making it possible for me
to write this book alongside my other activities. She provides for my every need and remains patient
and cheerful in spite of the effect that my self-imposed workload has on family life.
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CONTENTS
INTRODUCTION
xxxiii
CHAPTER 1: PROGRAMMING WITH VISUAL C++ 2010
1
The .NET Framework
The Common Language Runtime
Writing C++ Applications
Learning Windows Programming
2
2
3
5
Learning C++
The C++ Standards
Attributes
Console Applications
Windows Programming Concepts
5
5
6
6
7
What Is the Integrated Development Environment?
The Editor
The Compiler
The Linker
The Libraries
9
9
10
10
10
Using the IDE
10
Toolbar Options
Dockable Toolbars
Documentation
Projects and Solutions
Setting Options in Visual C++ 2010
Creating and Executing Windows Applications
Creating a Windows Forms Application
Summary
12
12
13
13
27
28
31
32
CHAPTER 2: DATA, VARIABLES, AND CALCULATIONS
The Structure of a C++ Program
The main() Function
Program Statements
Whitespace
Statement Blocks
Automatically Generated Console Programs
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35
36
44
44
46
47
47
CONTENTS
Defining Variables
49
Naming Variables
Declaring Variables
Initial Values for Variables
Fundamental Data Types
49
50
51
52
Integer Variables
Character Data Types
Integer Type Modifiers
The Boolean Type
Floating-Point Types
Literals
Defining Synonyms for Data Types
Variables with Specific Sets of Values
52
53
55
56
56
58
59
59
Basic Input/Output Operations
61
Input from the Keyboard
Output to the Command Line
Formatting the Output
Escape Sequences
61
62
63
64
Calculating in C++
66
The Assignment Statement
Arithmetic Operations
Calculating a Remainder
Modifying a Variable
The Increment and Decrement Operators
The Sequence of Calculation
Type Conversion and Casting
Type Conversion in Assignments
Explicit Type Conversion
Old-Style Casts
The Auto Keyword
Discovering Types
The Bitwise Operators
66
67
72
73
74
76
78
79
79
80
81
81
82
The Bitwise AND
The Bitwise OR
The Bitwise Exclusive OR
The Bitwise NOT
The Bitwise Shift Operators
Introducing Lvalues and Rvalues
Understanding Storage Duration and Scope
Automatic Variables
Positioning Variable Declarations
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82
84
85
86
86
88
89
89
92
CONTENTS
Global Variables
Static Variables
92
96
Namespaces
96
Declaring a Namespace
Multiple Namespaces
97
99
C++/CLI Programming
100
C++/CLI Specific: Fundamental Data Types
C++/CLI Output to the Command Line
C++/CLI Specific — Formatting the Output
C++/CLI Input from the Keyboard
Using safe_cast
C++/CLI Enumerations
Discovering C++/CLI Types
Summary
101
105
106
109
110
111
116
116
CHAPTER 3: DECISIONS AND LOOPS
Comparing Values
121
121
The if Statement
Nested if Statements
Nested if-else Statements
Logical Operators and Expressions
The Conditional Operator
The switch Statement
Unconditional Branching
Repeating a Block of Statements
What Is a Loop?
Variations on the for Loop
The while Loop
The do-while Loop
Nested Loops
123
124
128
130
133
135
139
139
139
142
150
152
154
C++/CLI Programming
157
The for each Loop
161
Summary
163
CHAPTER 4: ARRAYS, STRINGS, AND POINTERS
Handling Multiple Data Values of the Same Type
Arrays
Declaring Arrays
Initializing Arrays
Character Arrays and String Handling
Multidimensional Arrays
167
168
168
169
172
174
177
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CONTENTS
Indirect Data Access
180
What Is a Pointer?
Declaring Pointers
Using Pointers
Initializing Pointers
The sizeof Operator
Constant Pointers and Pointers to Constants
Pointers and Arrays
Dynamic Memory Allocation
The Free Store, Alias the Heap
The new and delete Operators
Allocating Memory Dynamically for Arrays
Dynamic Allocation of Multidimensional Arrays
Using References
181
181
182
183
190
192
194
201
201
202
203
206
206
What Is a Reference?
Declaring and Initializing Lvalue References
Defining and Initializing Rvalue References
Native C++ Library Functions for Strings
Finding the Length of a Null-Terminated String
Joining Null-Terminated Strings
Copying Null-Terminated Strings
Comparing Null-Terminated Strings
Searching Null-Terminated Strings
C++/CLI Programming
207
207
208
208
209
210
211
212
213
215
Tracking Handles
CLR Arrays
Strings
Tracking References
Interior Pointers
216
217
233
244
244
Summary
247
CHAPTER 5: INTRODUCING STRUCTURE INTO YOUR PROGRAMS
Understanding Functions
Why Do You Need Functions?
Structure of a Function
Using a Function
Passing Arguments to a Function
The Pass-by-value Mechanism
Pointers as Arguments to a Function
Passing Arrays to a Function
References as Arguments to a Function
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251
252
253
253
256
259
260
262
263
267
CONTENTS
Use of the const Modifier
Rvalue Reference Parameters
Arguments to main()
Accepting a Variable Number of Function Arguments
Returning Values from a Function
Returning a Pointer
Returning a Reference
Static Variables in a Function
Recursive Function Calls
270
271
273
275
277
277
280
283
285
Using Recursion
288
C++/CLI Programming
289
Functions Accepting a Variable Number of Arguments
Arguments to main()
Summary
289
290
292
CHAPTER 6: MORE ABOUT PROGRAM STRUCTURE
Pointers to Functions
295
295
Declaring Pointers to Functions
A Pointer to a Function as an Argument
Arrays of Pointers to Functions
Initializing Function Parameters
Exceptions
Throwing Exceptions
Catching Exceptions
Exception Handling in the MFC
Handling Memory Allocation Errors
Function Overloading
What Is Function Overloading?
Reference Types and Overload Selection
When to Overload Functions
Function Templates
296
299
301
302
303
305
306
307
308
310
310
313
313
314
Using a Function Template
314
Using the decltype Operator
An Example Using Functions
317
318
Implementing a Calculator
Eliminating Blanks from a String
Evaluating an Expression
Getting the Value of a Term
Analyzing a Number
Putting the Program Together
Extending the Program
319
322
322
325
326
330
331
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CONTENTS
Extracting a Substring
Running the Modified Program
C++/CLI Programming
333
336
336
Understanding Generic Functions
A Calculator Program for the CLR
Summary
337
343
349
CHAPTER 7: DEFINING YOUR OWN DATA TYPES
The struct in C++
353
354
What Is a struct?
Defining a struct
Initializing a struct
Accessing the Members of a struct
IntelliSense Assistance with Structures
The struct RECT
Using Pointers with a struct
Data Types, Objects, Classes, and Instances
354
354
355
355
359
360
361
363
First Class
Operations on Classes
Terminology
364
364
365
Understanding Classes
366
Defining a Class
Declaring Objects of a Class
Accessing the Data Members of a Class
Member Functions of a Class
Positioning a Member Function Definition
Inline Functions
Class Constructors
366
367
367
370
372
372
374
What Is a Constructor?
The Default Constructor
Assigning Default Parameter Values in a Class
Using an Initialization List in a Constructor
Making a Constructor Explicit
Private Members of a Class
Accessing private Class Members
The friend Functions of a Class
The Default Copy Constructor
The Pointer this
const Objects
374
376
378
381
381
382
385
386
388
390
393
const Member Functions of a Class
Member Function Definitions Outside the Class
xxii
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393
394
CONTENTS
Arrays of Objects
Static Members of a Class
395
397
Static Data Members
Static Function Members of a Class
Pointers and References to Class Objects
Pointers to Objects
References to Class Objects
397
401
401
401
404
C++/CLI Programming
406
Defining Value Class Types
Defining Reference Class Types
Defining a Copy Constructor for a Reference Class Type
Class Properties
initonly Fields
Static Constructors
Summary
407
412
415
416
429
431
432
CHAPTER 8: MORE ON CLASSES
Class Destructors
435
435
What Is a Destructor?
The Default Destructor
Destructors and Dynamic Memory Allocation
Implementing a Copy Constructor
Sharing Memory Between Variables
Defining Unions
Anonymous Unions
Unions in Classes and Structures
Operator Overloading
436
436
438
442
444
444
446
446
446
Implementing an Overloaded Operator
Implementing Full Support for a Comparison Operator
Overloading the Assignment Operator
Overloading the Addition Operator
Overloading the Increment and Decrement Operators
Overloading the Function Call Operator
The Object Copying Problem
Avoiding Unnecessary Copy Operations
Applying Rvalue Reference Parameters
Named Objects are Lvalues
Class Templates
447
450
454
459
463
465
466
466
470
472
477
Defining a Class Template
Creating Objects from a Class Template
Class Templates with Multiple Parameters
Templates for Function Objects
478
481
483
486
xxiii
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