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)

State machines in Qt

A state machines can be used for many purposes but, in this chapter, we will only cover topics related to animation.

How to do it...

State machine is not that hard to achieve in Qt at all. Let's get started by following these steps:

  1. We will set up a new user interface for our example program, which looks like this:
  1. We will include some headers in our source code:
#include <QStateMachine>
#include <QPropertyAnimation>
#include <QEventTransition>
  1. In our main window's constructor, add the following code to create a new state machine and two states, which we will be using later:
QStateMachine *machine = new QStateMachine(this);
QState *s1 = new QState();
QState *s2 = new QState...