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QEventTransition ClassThe QEventTransition class provides a QObject-specific transition for Qt events. More... #include <QEventTransition>Inherits: QAbstractTransition. Inherited by: QKeyEventTransition and QMouseEventTransition. This class was introduced in Qt 4.6. Properties
Public Functions
Signals
Protected Functions
Reimplemented Protected Functions
Additional Inherited MembersDetailed DescriptionThe QEventTransition class provides a QObject-specific transition for Qt events. A QEventTransition object binds an event to a particular QObject. QEventTransition is part of The State Machine Framework. Example: QPushButton *button = ...; QState *s1 = ...; QState *s2 = ...; // If in s1 and the button receives an Enter event, transition to s2 QEventTransition *enterTransition = new QEventTransition(button, QEvent::Enter); enterTransition->setTargetState(s2); s1->addTransition(enterTransition); // If in s2 and the button receives an Exit event, transition back to s1 QEventTransition *leaveTransition = new QEventTransition(button, QEvent::Leave); leaveTransition->setTargetState(s1); s2->addTransition(leaveTransition); SubclassingWhen reimplementing the eventTest() function, you should first call the base implementation to verify that the event is a QStateMachine::WrappedEvent for the proper object and event type. You may then cast the event to a QStateMachine::WrappedEvent and get the original event by calling QStateMachine::WrappedEvent::event(), and perform additional checks on that object. See also QState::addTransition(). Property Documentation
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| QObject * | eventSource() const |
| void | setEventSource(QObject * object) |
eventType : QEvent::Type
This property holds the type of event that this event transition is associated with.
Access functions:
| QEvent::Type | eventType() const |
| void | setEventType(QEvent::Type type) |
Member Function Documentation
QEventTransition::QEventTransition(QState * sourceState = 0)
Constructs a new QEventTransition object with the given sourceState.
QEventTransition::QEventTransition(QObject * object, QEvent::Type type, QState * sourceState = 0)
Constructs a new QEventTransition object associated with events of the given type for the given object, and with the given sourceState.
QEventTransition::~QEventTransition()
Destroys this QObject event transition.
bool QEventTransition::event(QEvent * e) [virtual protected]
Reimplemented from QObject::event().
bool QEventTransition::eventTest(QEvent * event) [virtual protected]
Reimplemented from QAbstractTransition::eventTest().
void QEventTransition::onTransition(QEvent * event) [virtual protected]
Reimplemented from QAbstractTransition::onTransition().