Book Image

Qt5 C++ GUI Programming Cookbook - Second Edition

By : Lee Zhi Eng
Book Image

Qt5 C++ GUI Programming Cookbook - Second Edition

By: Lee Zhi 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 becomes important so that it stands 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 user interfaces for your applications. Qt5 C++ GUI Programming Cookbook, Second Edition teaches you how to develop functional and appealing user interfaces using the latest version of QT5 and C++. This book will help you learn a variety of topics such as GUI customization and animation, graphics rendering, implementing Google Maps, and more. You will also be taken through advanced concepts like asynchronous programming, event handling using signals and slots, network programming, various aspects of optimizing your application. By the end of the book, you will be confident to design and customize GUI applications that meet your clients' expectations and have an understanding of best practice solutions for common problems.
Table of Contents (15 chapters)

Asynchronous programming made easier

Since the signals and slots mechanism is asynchronous in nature, we can make use of it for things other than user interfaces. In programming terms, an asynchronous operation is a process that works independently, allowing the program to continue its operation without waiting for the process to complete, which may stall the whole program.

Qt 5 allows you to make use of its signals and slots mechanism to easily achieve asynchronous processes without much effort. This is even more true after Qt 5 introduced the new syntax for signals and slots, which allows a signal to trigger a normal function instead of a slot function from a QObject.

In the following example, we will further explore this opportunity and learn how we can improve our program's efficiency by using asynchronous operations through the signals and slots mechanism that's...