Book Image

Hands-On GUI Programming with C++ and Qt5

By : Lee Zhi Eng
Book Image

Hands-On GUI Programming with C++ and Qt5

By: Lee Zhi Eng

Overview of this book

Qt 5, the latest version of Qt, enables you to develop applications with complex user interfaces for multiple targets. It provides you with faster and smarter ways to create modern UIs and applications for multiple platforms. This book will teach you to design and build graphical user interfaces that are functional, appealing, and user-friendly. In the initial part of the book, you will learn what Qt 5 is and what you can do with it. You will explore the Qt Designer, discover the different types of widgets generally used in Qt 5, and then connect your application to the database to perform dynamic operations. Next, you will be introduced to Qt 5 chart which allows you to easily render different types of graphs and charts and incorporate List View Widgets in your application. You will also work with various Qt modules, like QtLocation, QtWebEngine, and the networking module through the course of the book. Finally, we will focus on cross-platform development with QT 5 that enables you to code once and run it everywhere, including mobile platforms. By the end of this book, you will have successfully learned about high-end GUI applications and will be capable of building many more powerful, cross-platform applications.
Table of Contents (18 chapters)

Unit testing

Unit testing is an automated process for testing an individual module, class, or method in your application. Unit testing finds problems early in the development cycle. This includes both bugs in the programmer's implementation and flaws or missing parts of the specification for the unit.

Unit testing in Qt

Qt comes with a built-in unit testing module, which we can use by adding the testlib keyword to our project file (.pro):

QT += core gui testlib 

After that, add the following header to our source code:

#include <QtTest/QtTest> 

Then, we can start testing our code. We must declare our test functions as private slots. Other than that, the class must also inherit from the QOBject class. For example...