Meta Objects, Properties, and Reflective Programming

In this chapter we introduce the idea of reflection, the self-examination of an object's members. Using reflective programming, it becomes possible to write general-purpose operations that work on classes of varied structures. Using QVariant, a generic value-holder, we can operate on built-in types as well as other common types in a uniform way.

15.1

Anti-patterns

342

15.2

QMetaObject: The MetaObject Pattern

344

15.3

Type Identification and qobject_cast

345

15.4

Q_PROPERTY Macro: Describing QObject Properties

347

15.5

QVariant Class: Accessing Properties

350

15.6

DataObject: An Extension of QObject

353

15.7

Property Containers: PropsMap

355



Part I: Introduction to C++ and Qt 4

C++ Introduction

Classes

Introduction to Qt

Lists

Functions

Inheritance and Polymorphism

Part II: Higher-Level Programming

Libraries

Introduction to Design Patterns

QObject

Generics and Containers

Qt GUI Widgets

Concurrency

Validation and Regular Expressions

Parsing XML

Meta Objects, Properties, and Reflective Programming

More Design Patterns

Models and Views

Qt SQL Classes

Part III: C++ Language Reference

Types and Expressions

Scope and Storage Class

Statements and Control Structures

Memory Access

Chapter Summary

Inheritance in Detail

Miscellaneous Topics

Part IV: Programming Assignments

MP3 Jukebox Assignments

Part V: Appendices

MP3 Jukebox Assignments

Bibliography

MP3 Jukebox Assignments



An Introduction to Design Patterns in C++ with Qt 4
An Introduction to Design Patterns in C++ with Qt 4
ISBN: 0131879057
EAN: 2147483647
Year: 2004
Pages: 268

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