#include int main(int argv, char **args) { QApplication app(argv, args); QLabel *label = new QLabel; //![0] QStateMachine machine; QState *s1 = new QState(); QState *s2 = new QState(); QState *s3 = new QState(); //![0] //![4] s1->assignProperty(label, "text", "In state s1"); s2->assignProperty(label, "text", "In state s2"); s3->assignProperty(label, "text", "In state s3"); //![4] //![5] QObject::connect(s3, SIGNAL(entered()), button, SLOT(showMaximized())); QObject::connect(s3, SIGNAL(exited()), button, SLOT(showMinimized())); //![5] //![1] s1->addTransition(button, SIGNAL(clicked()), s2); s2->addTransition(button, SIGNAL(clicked()), s3); s3->addTransition(button, SIGNAL(clicked()), s1); //![1] //![2] machine.addState(s1); machine.addState(s2); machine.addState(s3); machine.setInitialState(s1); //![2] //![3] machine.start(); //![3] label->show(); return app.exec(); }