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#include <QtGui>
//![0]
struct StringEvent : public QEvent
{
StringEvent(const QString &val)
: QEvent(QEvent::Type(QEvent::User+1)),
value(val) {}
QString value;
};
//![0]
//![1]
class StringTransition : public QAbstractTransition
{
public:
StringTransition(const QString &value)
: m_value(value) {}
protected:
virtual bool eventTest(QEvent *e) const
{
if (e->type() != QEvent::Type(QEvent::User+1)) // StringEvent
return false;
StringEvent *se = static_cast<StringEvent*>(e);
return (m_value == se->value);
}
virtual void onTransition(QEvent *) {}
private:
QString m_value;
};
//![1]
int main(int argv, char **args)
{
QApplication app(argv, args);
//![2]
QStateMachine machine;
QState *s1 = new QState();
QState *s2 = new QState();
QFinalState *done = new QFinalState();
StringTransition *t1 = new StringTransition("Hello");
t1->setTargetState(s2);
s1->addTransition(t1);
StringTransition *t2 = new StringTransition("world");
t2->setTargetState(done);
s2->addTransition(t2);
machine.addState(s1);
machine.addState(s2);
machine.addState(done);
machine.setInitialState(s1);
//![2]
//![3]
machine.postEvent(new StringEvent("Hello"));
machine.postEvent(new StringEvent("world"));
//![3]
return app.exec();
}
#include "main4.moc"
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