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Qt 6 C++ GUI Programming Cookbook

Qt 6 C++ GUI Programming Cookbook

By : Eng
5 (7)
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Qt 6 C++ GUI Programming Cookbook

Qt 6 C++ GUI Programming Cookbook

5 (7)
By: Eng

Overview of this book

With the growing need to develop GUIs for multiple targets and multiple screens, improving the visual quality of your application has become pivotal in helping it stand out from your competitors. With its cross-platform ability and the latest UI paradigms, Qt makes it possible to build intuitive, interactive, and user-friendly UIs for your applications. The third edition of Qt 6 C++ GUI Programming Cookbook teaches you how to develop functional and appealing UIs using the latest version of Qt 6 and C++. This book will help you learn a variety of topics such as GUI customization and animation, graphics rendering, and implementing Google Maps. You’ll also be taken through advanced concepts such as asynchronous programming, event handling using signals and slots, network programming, and other aspects to optimize your application. By the end of this Qt book, you’ll have the confidence you need to design and customize GUI applications that meet your clients' expectations and have an understanding of best-practice solutions to common problems during the app development process.
Table of Contents (17 chapters)
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Data protection and sharing data between threads

Even though multithreading makes processes run asynchronously, there will be times when threads must stop and wait for other threads. This usually happens when both threads modify the same variable simultaneously. It is common to force threads to wait for one another to protect shared resources, such as data. Qt 6 also provides both low-level methods and high-level mechanisms to synchronize threads.

How to do it…

We will continue to use the code from the previous example project, since we have already established a working program with multithreading:

  1. Open up myworker.h and add the following header:
    #include <QObject>
    #include <QDebug>
    #include <QMutex>
  2. Then, we will add two new variables and make some changes to the class constructor:
    public:
        explicit MyWorker(QMutex *mutex);
        int* myInputNumber;
        QMutex* myMutex;
    signals:
    ...

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