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

Creating a simple Qt Quick application

Let's create our first Qt Quick application using Qt 6. A Hello World program is a very simple program that displays Hello World!. The project uses minimal—and the most basic—code. For this project, we will use the project skeleton created by Qt Creator. So, let's begin! Proceed as follows:

  1. To create a new Qt Quick application, click on the File menu option on the menu bar or hit Ctrl + N. Alternatively, you can also click on the New Project button located on the welcome screen. Then, a window will pop up for you to choose a project template. Select Qt Quick Application - Empty and click the Choose... button, as shown in the following screenshot:

    Figure 4.2 – New Qt Quick application wizard

  2. In the next step, you will be asked to choose a project name and a project location. You can navigate to the desired project location by clicking the Browse… button. Let's name our sample project SimpleQtQuickApp...