Qt5 C++ GUI Programming Cookbook - Second Edition

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:

2. We will include some headers in our source code:

#include <QStateMachine>#include <QPropertyAnimation>#include <QEventTransition>

3. 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();

4. We will define what we should do within each state, which, in this case, will ...