C++ GUI Programming with Qt 3.pdf

C ++ GUI Programming

with Qt 3

B RUCE P ERENS ’ O PEN S OURCE S ERIES

◆

C++ GUI Programming with Qt 3

Jasmin Blanchette, Mark Summerﬁeld

◆

Managing Linux Systems with Webmin: System

Administration and Module Development

Jamie Cameron

◆

Understanding the Linux Virtual Memory Manager

Mel Gorman

◆

Implementing CIFS: The Common Internet File System

Christopher R. Hertel

◆

Embedded Software Development with eCos

Anthony J. Massa

◆

Rapid Application Development with Mozilla

Nigel McFarlane

◆

The Linux Development Platform: Conﬁguring, Using,

and Maintaining a Complete Programming

Environment

Rafeeq Ur Rehman, Christopher Paul

◆

Intrusion Detection Systems with Snort:

Advanced IDS Techniques with Snort, Apache,

MySQL, PHP, and ACID

Rafeeq Ur Rehman

◆

The Ofﬁcial Samba-3 HOWTO and Reference Guide

John H. Terpstra, Jelmer R. Vernooij, Editors

C ++ GUI Programming

with Qt 3

Jasmin Blanchette

Mark Summerﬁeld

Prentice Hall in association with Trolltech Press

Library of Congress Cataloging-in-Publication Data

A CIP catalog record for this book can be obtained from the Library of Congress

Editorial/Production Supervision: Kathleen M. Caren

Cover Design Director: Jerry Votta

Art Director: Gail Cocker-Bogusz

Manufacturing Buyer: Maura Zaldivar

Acquisitions Editor: Jill Harry

Editorial Assistant: Brenda Mulligan

Marketing Manager: Dan Depasquale

2004 Trolltech AS

Published by Pearson Education, Inc.

Publishing as Prentice Hall Professional Technical Reference

Upper Saddle River, New Jersey 07458

This material may only be distributed subject to the terms and conditions set forth in the

Open Publication License, v1.0 or later (the latest version is available at http://www.open-

content.org/openpub/ ).

Prentice Hall PTR offers excellent discounts on this book when ordered in quanti-

ty for bulk purchases or special sales. For more information, please contact: U.S.

Corporate and Government Sales, 1-800-382-3419, corpsales@pearsontechgroup.

com. For sales outside of the U.S., please contact: International Sales, 1-317-581-

3793, international@pearsontechgroup.com.

Trolltech ,Qt , and the Trolltech logo are registered trademarks of Trolltech. OpenGL

is a trademark of Silicon Graphics, Inc. in the United States and other countries. All

other company and product names mentioned herein are the trademarks or registered

trademarks of their respective owners.

The authors, copyright holder, and publisher have taken care in the preparation of this book,

but make no expressed or implied warranty of any kind and assume no responsibility for

errors or omissions. The information in this book is furnished for informational use only, is

subject to change without notice, and does not represent a commitment on the part of the

damages in connection with or arising out of the use of the information or programs

contained herein.

The software described in this book is furnished under a license agreement or non-disclosure

agreement. The software may be used or copied only in accordance with the terms of the

agreement.

Printed in the United States of America

First Printing

ISBN 0-13-124072-2

Pearson Education Ltd.

Pearson Education Australia Pty., Limited

Pearson Education Singapore, Pte. Ltd.

Pearson Education North Asia Ltd.

Pearson Education Canada, Ltd.

Pearson Educación de Mexico, S.A. de C.V.

Pearson Education-Japan

Pearson Education Malaysia, Pte. Ltd.

Contents

Foreword .........................................................

Preface ...........................................................

Acknowledgments ............................................... xiii

A Brief History of Qt ............................................

Part I: Basic Qt

1 . Getting Started ...............................................

Hello Qt .....................................................

Making Connections .........................................

Using the Reference Documentation ..........................

2 . Creating Dialogs .............................................. 11

Subclassing QDialog ......................................... 11

Signals and Slots in Depth ................................... 18

Rapid Dialog Design ......................................... 21

Shape-Changing Dialogs ..................................... 28

Dynamic Dialogs ............................................

Built-in Widget and Dialog Classes ...........................

3 . Creating Main Windows ...................................... 39

Subclassing QMainWindow .................................. 40

Creating Menus and Toolbars ................................ 44

Implementing the File Menu ................................. 49

Setting Up the Status Bar .................................... 56

Using Dialogs ............................................... 58

Storing Settings ............................................. 63

Multiple Documents ......................................... 64

Splash Screens .............................................. 67

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