Book Image

Mastering Qt 5 - Second Edition

By : Guillaume Lazar, Robin Penea
Book Image

Mastering Qt 5 - Second Edition

By: Guillaume Lazar, Robin Penea

Overview of this book

Qt 5.11 is an app development framework that provides a great user experience and develops full capability applications with Qt Widgets, QML, and even Qt 3D. Whether you're building GUI prototypes or fully-fledged cross-platform GUI applications with a native look and feel, Mastering Qt 5 is your fastest, easiest, and most powerful solution. This book addresses various challenges and teaches you to successfully develop cross-platform applications using the Qt framework, with the help of well-organized projects. Working through this book, you will gain a better understanding of the Qt framework, as well as the tools required to resolve serious issues, such as linking, debugging, and multithreading. You'll start off your journey by discovering the new Qt 5.11 features, soon followed by exploring different platforms and learning to tame them. In addition to this, you'll interact with a gamepad using Qt Gamepad. Each chapter is a logical step for you to complete in order to master Qt. By the end of this book, you'll have created an application that has been tested and is ready to be shipped.
Table of Contents (16 chapters)

Defining data classes

We are building our gallery from the ground up. We will start with the implementation of our data classes to be able to properly write the database layer. The application aims to organize pictures into albums. Hence, the two obvious classes are Album and Picture. In our example, an album simply has a name. A Picture class must belong to an Album class and have a file path (the path on your filesystem where the original file is located).

The Album class has already been created on project creation. Open the Album.h file and update it to include the following implementation:

#include <QString> 
 
#include "gallery-core_global.h" 
 
class GALLERYCORESHARED_EXPORT Album 
{ 
public: 
    explicit Album(const QString& name = ""); 
 
    int id() const; 
    void setId(int id); 
    QString name() const; 
    void setName(const QString...