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50
51 #include <QtWidgets>
52
main(int argv,char ** args)53 int main(int argv, char **args)
54 {
55 QApplication app(argv, args);
56
57 QStateMachine machine;
58
59 //![0]
60 QState *s1 = new QState();
61 QState *s11 = new QState(s1);
62 QState *s12 = new QState(s1);
63 QState *s13 = new QState(s1);
64 s1->setInitialState(s11);
65 machine.addState(s1);
66 //![0]
67
68 //![2]
69 s12->addTransition(quitButton, &QPushButton::clicked, s12);
70 //![2]
71
72 //![1]
73 QFinalState *s2 = new QFinalState();
74 s1->addTransition(quitButton, &QPushButton::clicked, s2);
75 machine.addState(s2);
76 machine.setInitialState(s1);
77
78 QObject::connect(&machine, &QStateMachine::finished,
79 QCoreApplication::instance(), &QCoreApplication::quit);
80 //![1]
81
82 QButton *interruptButton = new QPushButton("Interrupt Button");
83 QWidget *mainWindow = new QWidget();
84
85 //![3]
86 QHistoryState *s1h = new QHistoryState(s1);
87
88 QState *s3 = new QState();
89 s3->assignProperty(label, "text", "In s3");
90 QMessageBox *mbox = new QMessageBox(mainWindow);
91 mbox->addButton(QMessageBox::Ok);
92 mbox->setText("Interrupted!");
93 mbox->setIcon(QMessageBox::Information);
94 QObject::connect(s3, &QState::entered, mbox, &QMessageBox::exec);
95 s3->addTransition(s1h);
96 machine.addState(s3);
97
98 s1->addTransition(interruptButton, &QPushButton::clicked, s3);
99 //![3]
100
101 return app.exec();
102 }
103
104