Book Image

Qt5 C++ GUI Programming Cookbook

By : Lee Zhi Eng
Book Image

Qt5 C++ GUI Programming Cookbook

By: Lee Zhi Eng

Overview of this book

With the advancement of computer technology, the software market is exploding with tons of software choices for the user, making their expectations higher in terms of functionality and the look and feel of the application. Therefore, improving the visual quality of your application is vital in order to overcome the market competition and stand out from the crowd. This book will teach you how to develop functional and appealing software using Qt5 through multiple projects that are interesting and fun. This book covers a variety of topics such as look-and-feel customization, GUI animation, graphics rendering, implementing Google Maps, and more. You will learn tons of useful information, and enjoy the process of working on the creative projects provided in this book
Table of Contents (16 chapters)
Qt5 C++ GUI Programming Cookbook
About the Author
About the Reviewer

Data conversion

Qt provides a set of classes and functions for easily converting between different types of data. This makes Qt more than just a GUI library; it is a complete platform for software development. The QVariant class, which we will be using in the following example, makes Qt even more flexible and powerful compared to similar conversion functionalities provided by the C++ standard library.

How to do it…

Let's learn how to convert various data types in Qt by following these steps:

  1. Open up Qt Creator and create a new Qt Console Application project by going to File | New File or Project:

  2. Next, open up main.cpp and add the following headers to it:

    #include <QCoreApplication>
    #include <QDebug>
    #include <QtMath>
    #include <QDateTime>
    #include <QTextCodec>
    #include <iostream>
  3. Then, in the main() function, add the following code to convert a string to a number:

    int numberA = 2;
    QString numberB = "5";
    qDebug() << "1) " << "2 + 5 =" << numberA...