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

Understanding the M/V architecture

Traditionally, the Model-View-Controller (MVC) design pattern is often used when building UIs. As the name suggests, it consists of three terms: Model, View, and Controller. The Model is an independent component with a dynamic data structure and logic, the View is the visual element, and the Controller decides how the UI responds to the user inputs. Before MVC came into existence, developers used to put these components together. It is not always possible to decouple the Controller from other components although developers want to keep them as distinct from each other as possible. MVC design decouples the components to increase flexibility and reuse. The following figure illustrates the components of a traditional MVC pattern:

Figure 7.1 – Traditional MVC design pattern

In the MVC pattern, a user sees the View and interacts with a Controller. The Controller sends data to the Model and the Model updates the View. If...