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

Section 2: Working with Embedded Qt

Chapter 4 – Important Qt Concepts

  1. If a signal is emitted, when is a slot that's connected by a direct connection executed?
    Immediately, and in the same thread.
  2. Can console-only (non-GUI) applications be written in Qt?
    Yes.
  3. Can a signal with two parameters ( int and QString) be connected to a slot that accepts one parameter ( QString)?
    No. The parameter count and types must match.
  4. What must be defined for Q_PROPERTY when creating a property?
    1. All the methods named by READ, WRITE, NOTIFY, or other keywords.
    2. Storage for the property.
  5. Can properties be added to QObject at runtime instead of when the class is defined?
    Yes, dynamic properties can be added at runtime.
  6. What is QVariant...