Book Image

Cross-Platform Development with Qt 6 and Modern C++

By : Nibedit Dey
Book Image

Cross-Platform Development with Qt 6 and Modern C++

By: Nibedit Dey

Overview of this book

Qt is a cross-platform application development framework widely used for developing applications that can run on a wide range of hardware platforms with little to no change in the underlying codebase. If you have basic knowledge of C++ and want to build desktop or mobile applications with a modern graphical user interface (GUI), Qt is the right choice for you. Cross-Platform Development with Qt 6 and Modern C++ helps you understand why Qt is one of the favorite GUI frameworks adopted by industries worldwide, covering the essentials of programming GUI apps across a multitude of platforms using the standard C++17 and Qt 6 features. Starting with the fundamentals of the Qt framework, including the features offered by Qt Creator, this practical guide will show you how to create classic user interfaces using Qt Widgets and touch-friendly user interfaces using Qt Quick. As you advance, you'll explore the Qt Creator IDE for developing applications for multiple desktops as well as for embedded and mobile platforms. You will also learn advanced concepts about signals and slots. Finally, the book takes you through debugging and testing your app with Qt Creator IDE. By the end of this book, you'll be able to build cross-platform applications with a modern GUI along with the speed and power of native apps.
Table of Contents (17 chapters)
Section 1: The Basics
Section 2: Cross-Platform Development
Section 3: Advanced Programming, Debugging, and Deployment


In this chapter, we looked at the core concepts of signals and slots in Qt. We discussed different ways of connecting signals and slots. We also learned how to connect one signal to multiple slots and multiple signals to a single slot. Then, we looked at how to use them with Qt Widgets, as well as in QML, as well as the mechanism behind the signal and slot connection. After that, you learned how to communicate between C++ and QML using signals and slots.

This chapter also discussed events and event loops in Qt. We explored how to use events instead of the signal-slot mechanism. After doing this, we created a sample program with a custom event handler to capture events and filter them.

After learning about events, we implemented a simple drag and drop example. Now, you can communicate between classes, between C++ and QML, and implement the necessary actions based on events.

In the next chapter, we will learn about Model View programming and how to create custom models...