Qt6 QML Advanced

About this book

This book is about connecting QML to a real C++ backend and handling real data. It goes past the tutorials and into the patterns professional Qt developers rely on: clean separation between a declarative QML front end and a C++ backend that absorbs all the networking, threading, and data complexity.

You do not read about these patterns. You build them, across five chapters, each ending with a working project you keep.

Who this book is for

You should already know your way around basic QML and Qt. This book is for you if you want to:

Integrate C++ and QML for high-performance or complex applications
Build custom models, real data flows, and reusable QML types
Work with REST APIs and real network data, including caching and threading
Architect QML apps that stay maintainable as they grow

If you have shipped a small QML app and hit the wall where “just put it in a ListModel” stops working, this is the book that gets you past it.

What you build

Chapter 1: Diving In

The foundation for serious QML/C++ integration: modern Qt 6 project structure, context properties, instantiable types, signals and slots, and QML modules. You come out knowing every way QML and C++ can talk to each other, and when to reach for each one.

Chapter 2: REST API Client with Custom Types

A complete GitHub API client built on QNetworkAccessManager. Custom C++ types that map cleanly to JSON, real error handling, asynchronous requests, and a polished UI with loading and empty states.

Chapter 3: Custom Models for Real Data

A full contact manager built on QAbstractListModel. You progress from a simple string list to full CRUD on an object model, add search and filtering with QSortFilterProxyModel, and persist everything to JSON.

Chapter 4: REST-Powered Models, Caching and Threading

Repo Explorer Pro: a paginated, cached, multi-tab GitHub explorer that extends the Chapter 2 client. Offset and cursor pagination, a disk cache running on its own QThread, background JSON parsing with QtConcurrent, polling-based live updates, and multi-tab UI state. This is where you learn to keep the interface responsive while the backend does heavy work.

Chapter 5: Building a Foundation Library with Advanced Custom Types

QmlAdvCore: a reusable QML module you build and publish to GitHub. Object, list, default, grouped, and attached properties, plus property value sources and non-visual services, packaged as a real, versioned module that other projects can depend on.

Early access, and how it works

The book is complete (5 chapters) but it is part of a three volume series designed to take one from a beginner level to a point where they design and ship professional Qt/QML/C++ applications. No fluff . Qt6 QML For Beginners and Qt6 QML Advanced are done. The next and last one in the series is Qt6 QML Pro, where we take the gloves off and get to a point where we deploy, sign and ship everywhere Qt can go. Windows, Linux, Mac, Android, IoS, Embedded, you name it.

The series is in early access until the Qt6 QML Pro book is finished, and right now if you purchase Qt6 QML Advanced, you also get Qt6 QML Pro for free. Buying now gets you every chapter of the Pro book as it lands, and I publish at least one new chapter per month until the book is done.

The original plan was a single ten-chapter book. It grew large enough that the back half, custom visual components and charts, advanced QML engine control, a full IoT sensor dashboard on Raspberry Pi, testing and debugging, and cross-platform deployment, became its own book: Qt6 QML Pro. Everyone who buys Advanced during early access receives Qt6 QML Pro free when it ships. The promise was lifetime access to new chapters, and that promise is kept.

Early buyers lock in the current price. When the books are finished, the price goes up. Buy now and the price you pay today is the price you keep, including all future updates.

What you get

The book in PDF and EPUB, readable on any device
Qt6 QML Pro, free, when it ships, for early-access buyers
Every new chapter as it is written, at least one per month, for life
The full source code for every project in the book
Access to the developer community on Discord for questions and feedback

The bundle option

Want the complete path from your first QML window to professional apps? The Qt6 QML bundle pairs this book with Qt6 QML For Beginners, a full step-by-step course in QML that builds up to a persistent, network-connected To-Do List app. Together they take you from the fundamentals to production-grade C++/QML engineering.

Included:

📗 Book 1: Qt6 QML for Beginners (Live) A complete step-by-step guide to QML, from installing Qt to building a To-Do List app that animates, remembers your tasks with SQLite, and syncs over a REST API. No prior Qt experience needed.
📘 Book 2: Qt6 QML Advanced (Live) Connecting QML to a real C++ backend: a GitHub REST client, custom QAbstractListModel data models, pagination with caching and threading, and a reusable QML library you publish to GitHub. The patterns professional Qt teams actually use.
📙 Book 3 Qt6 QML Pro (Under development) Production engineering: custom visual components and charts, advanced QML engine control, a full IoT sensor dashboard on a Raspberry Pi, testing and debugging, and cross-platform deployment. Delivered chapter by chapter, and free for early-access buyers of Book 2.

Get the Bundle Now

Get the Bundle Now

⚠️ The price will go up once all the books are completed.

Best Value: Buying the bundle saves you money compared to purchasing each book separately—and gives you a complete learning path from beginner to advanced developer.

Get the bundle