Book Image

Learn Qt 5

By : Nicholas Sherriff
Book Image

Learn Qt 5

By: Nicholas Sherriff

Overview of this book

Qt is a mature and powerful framework for delivering sophisticated applications across a multitude of platforms. It has a rich history in the Linux world, is widely used in embedded devices, and has made great strides in the Mobile arena over the past few years. However, in the Microsoft Windows and Apple Mac OS X worlds, the dominance of C#/.NET and Objective-C/Cocoa means that Qt is often overlooked. This book demonstrates the power and flexibility of the Qt framework for desktop application development and shows how you can write your application once and deploy it to multiple operating systems. Build a complete real-world line of business (LOB) solution from scratch, with distinct C++ library, QML user interface, and QtTest-driven unit-test projects. This is a suite of essential techniques that cover the core requirements for most LOB applications and will empower you to progress from a blank page to shipped application.
Table of Contents (11 chapters)


As we have a lot of functionality we want to share across our data models, we'll implement an Entity base class. We need to be able to represent parent/child relationships so that a client can have supply and billing addresses. We also need to support collections of entities for our contacts and appointments. Finally, each entity hierarchy must be able to serialize itself to and from a JSON object.

Create a new class Entity in cm-lib/source/data.


#ifndef ENTITY_H
#define ENTITY_H
#include <map>
#include <QObject> #include <QScopedPointer>
#include <cm-lib_global.h> #include <data/data-decorator.h>
namespace cm { namespace data {
class CMLIBSHARED_EXPORT Entity : public QObject { Q_OBJECT
public: Entity(QObject* parent = nullptr, const QString& key =