Delphi 6 - Borland Delphi 6 Developer's Guide.pdf - Delphi 6 - musli_com

Borland ®

Delphi ™ 6 Developer’s Guide

Steve Teixeira and Xavier Pacheco

201 West 103rd St., Indianapolis, Indiana, 46290 USA

Borland ®

Delphi ™ 6 Developer’s Guide

E XECUTIVE E DITOR

Michael Stephens

A CQUISITIONS E DITOR

Carol Ackerman

retrieval system, or transmitted by any means, electronic, mechanical, photo-

copying, recording, or otherwise, without written permission from the pub-

lisher. No patent liability is assumed with respect to the use of the information

contained herein. Although every precaution has been taken in the preparation

of this book, the publisher and author assume no responsibility for errors or

omissions. Nor is any liability assumed for damages resulting from the use of

the information contained herein.

International Standard Book Number: 0-672-32115-7

Library of Congress Catalog Card Number: 2001086071

Printed in the United States of America

First Printing: October 2001

D EVELOPMENT E DITOR

Tiffany Taylor

M ANAGING E DITOR

Matt Purcell

P ROJECT E DITOR

Christina Smith

P RODUCTION E DITOR

Rhonda Tinch-Mize

I NDEXER

Sharon Shock

4 3 2 1

P ROOFREADER

Harvey Stanbrough

Trademarks

All terms mentioned in this book that are known to be trademarks or service

marks have been appropriately capitalized. Sams Publishing cannot attest to

the accuracy of this information. Use of a term in this book should not be

regarded as affecting the validity of any trademark or service mark.

T ECHNICAL E DITOR

John Ray Thomas

Tom Theobold

T EAM C OORDINATOR

Pamalee Nelson

M EDIA D EVELOPER

Dan Scherf

Warning and Disclaimer

Every effort has been made to make this book as complete and as accurate as

possible, but no warranty or fitness is implied. The information provided is on

an “as is” basis. The authors and the publisher shall have neither liability nor

responsibility to any person or entity with respect to any loss or damages aris-

ing from the information contained in this book or from the use of the CD or

programs accompanying it.

I NTERIOR D ESIGNER

Anne Jones

C OVER D ESIGNER

Aren Howell

P AGE L AYOUT

Octal Publishing, Inc.

Contents at a Glance

Introduction

Part I: Development Essentials

1 Programming in Delphi

2 The Object Pascal Language

3 Adventures in Messaging

Part II: Advanced Techniques

4 Writing Portable Code

5 Multithreaded Techniques

6 Dynamic Link Libraries

Part III: Database Development

7 Delphi Database Architecture

8 Database Development with dbExpress

9 Database Development with dbGo for ADO

Part IV: Component-Based Development

10 Component Architecture: VCL and CLX

11 VCL Component Building

12 Advanced VCL Component Building

13 CLX Component Development

14 Packages to the Max

15 COM Development

16 Windows Shell Programming

17 Using the Open Tools API

Part V: Enterprise Development

18 Transactional Development with COM+/MTS

19 CORBA Development

20 BizSnap Development: Writing SOAP-Based Web Services

21 DataSnap Development

Part VI: Internet Development

22 ASP Development

23 Building WebSnap Applications

24 Wireless Development

Index

Table of Contents

Introduction 1

Who Should Read This Book ................................................................2

Conventions Used in This Book ............................................................2

Delphi 6 Developer’s Guide Web Site ....................................................2

Getting Started ........................................................................................3

P ART I Development Essentials 5

1 Programming in Delphi 7

The Delphi Product Family ....................................................................8

Delphi: What and Why ........................................................................10

The Quality of the Visual Development Environment ....................11

The Speediness of the Compiler Versus the Efficiency

of the Compiled Code ..................................................................12

The Power of the Programming Language Versus

Its Complexity ..............................................................................13

The Flexibility and Scalability of the Database Architecture ........14

The Design and Usage Patterns Enforced by the Framework ........15

A Little History ....................................................................................15

Delphi 1 ..........................................................................................16

Delphi 2 ..........................................................................................16

Delphi 3 ..........................................................................................17

Delphi 4 ..........................................................................................18

Delphi 5 ..........................................................................................18

Delphi 6 ..........................................................................................19

The Delphi IDE ....................................................................................19

The Main Window ..........................................................................20

The Form Designer ..........................................................................22

The Object Inspector ......................................................................22

The Code Editor ..............................................................................22

The Code Explorer ..........................................................................23

The Object TreeView ......................................................................23

A Tour of Your Project’s Source ..........................................................24

Tour of a Small Application ................................................................26

What’s So Great About Events, Anyway? ............................................28

Contract-Free Programming ............................................................28

Turbo Prototyping ................................................................................29

Extensible Components and Environment ..........................................29

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