Introduction to Design Patterns in C++ with Qt

Book Review: «An Introduction to Design Patterns in C++ with Qt» (2011)

The book «An Introduction to Design Patterns in C++ with Qt» was written by Alan Ezust and Paul Ezust and first published in 2011. It is a fundamental textbook that simultaneously introduces the reader to the C++ language, the Qt library, and classic design patterns (GoF). With 672 pages, it covers the material in sufficient depth without excessive academicism.

What is this book about?

The book is structured as a comprehensive course that starts with the basics of C++ (classes, inheritance, polymorphism, templates) and gradually moves to more advanced topics: memory management, RAII idioms, signals and slots, Model/View, working with graphics (Graphics View Framework), and, of course, design patterns. Each pattern (e.g., Strategy, Observer, Factory, Singleton) is explained using real-world examples with Qt. The authors do not simply list patterns but show how they are already embedded in Qt's architecture (e.g., signals and slots are an implementation of the Observer pattern).

Who is the book for?

• Beginner C++ developers who want to learn the language in a practical context.
• Developers transitioning from other languages (Java, Python) to C++ and Qt.
• Students and instructors of courses on object-oriented programming and patterns.
• Programmers looking to systematize their knowledge of design patterns through concrete examples.

What will the reader learn?

• C++ basics: classes, inheritance, virtual functions, templates, exceptions.
• Memory management in C++: smart pointers, RAII, garbage collection in Qt.
• The Qt library: signals and slots, widgets, events, Model/View, working with files and XML.
• 23 classic GoF patterns with examples in C++ and Qt.
• Qt idioms: QObject, QPointer, QSharedPointer, QVariant, containers.
• Designing graphical interfaces using patterns.
• Multithreading in Qt (QThread, signals between threads).

Strengths of the book

Practical focus. Each chapter contains exercises and code examples that can be run immediately. The authors do not separate theory from practice — patterns are demonstrated in working applications.

Integration of C++ and Qt. The book does not just teach C++ or Qt separately but shows how they work together. This is especially valuable since Qt is one of the few frameworks that actively uses patterns at the API level.

Accessible writing style. Despite the complexity of the topics, the text is written in clear language with explanations and code comments. Suitable for self-study.

Focus on modern C++ (at the time of release). The book covers C++11 (smart pointers, auto, range-based for), which keeps it relevant even years later.

Good structure. The material is divided into 4 parts: C++ basics, Qt basics, design patterns, and advanced topics (multithreading, networking, XML). The progression from simple to complex is well maintained.

Who is it recommended for?

The book will be useful for anyone who wants to learn C++ and Qt from scratch while immediately gaining an understanding of proper application architecture. It is also suitable for experienced developers who want to refresh their knowledge of patterns or transition to Qt. However, it is worth noting that the book was published in 2011, so some details (e.g., Qt 4.7 version) are outdated. Nevertheless, the core concepts (patterns, signals/slots, Model/View) remain unchanged in Qt 6. For learning design patterns in the context of C++, this is one of the best guides.

Conclusion: «An Introd