Book Image

Hands-On Embedded Programming with Qt

By : John Werner
Book Image

Hands-On Embedded Programming with Qt

By: John Werner

Overview of this book

Qt is an open source toolkit suitable for cross-platform and embedded application development. This book uses inductive teaching to help you learn how to create applications for embedded and Internet of Things (IoT) devices with Qt 5. You’ll start by learning to develop your very first application with Qt. Next, you’ll build on the first application by understanding new concepts through hands-on projects and written text. Each project will introduce new features that will help you transform your basic first project into a connected IoT application running on embedded hardware. In addition to gaining practical experience in developing an embedded Qt project, you will also gain valuable insights into best practices for Qt development and explore advanced techniques for testing, debugging, and monitoring the performance of Qt applications. The examples and projects covered throughout the book can be run both locally and on an embedded platform. By the end of this book, you will have the skills you need to use Qt 5 to confidently develop modern embedded applications.
Table of Contents (22 chapters)
Free Chapter
1
Section 1: Getting Started with Embedded Qt
5
Section 2: Working with Embedded Qt
10
Section 3: Deep Dive into Embedded Qt
14
Section 4: Advanced Techniques and Best Practices
Appendix A: BigProject Requirements

Digging deeper

In writing this chapter, I glossed over a few things for the sake of keeping the flow of the lesson. Now is a good time to look at some of them in more depth.

In particular, I want to take a little bit of time to explain the code for the push button, what these slots and signals are, and to pontificate on testing.

Explaining the push button code

The on_pushButton_clicked() handles the user clicking on pushbutton. Now, we will go through the method line by line to understand what is happening:

void MainWindow::on_pushButton_clicked()
{

The naming of this method enables the Qt GUI to automatically connect the signal emitted by the button when it is pressed to a slot in our main window that will handle it. The...