QEventTransition Class▲
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Header: QEventTransition
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CMake:
find_package(Qt6 REQUIRED COMPONENTS StateMachine)
target_link_libraries(mytarget PRIVATE Qt6::StateMachine)
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qmake: QT += statemachine
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Inherits: QAbstractTransition
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Inherited By: QKeyEventTransition and QMouseEventTransition
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Group: QEventTransition is part of statemachine
Detailed Description▲
A QEventTransition object binds an event to a particular QObject. QEventTransition is part of Qt 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);Subclassing▲
When 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▲
See also QState::addTransition()
Property Documentation▲
[bindable] eventSource : QObject*▲
This property supports QProperty bindings.
This property holds the event source that this event transition is associated with
[bindable] eventType : QEvent::Type▲
This property supports QProperty bindings.
This property holds the type of event that this event transition is associated with
Member Function Documentation▲
QEventTransition::QEventTransition(QState *sourceState = nullptr)▲
Constructs a new QEventTransition object with the given sourceState.
QEventTransition::QEventTransition(QObject *object, QEvent::Type type, QState *sourceState = nullptr)▲
Constructs a new QEventTransition object associated with events of the given type for the given object, and with the given sourceState.
[virtual] QEventTransition::~QEventTransition()▲
Destroys this QObject event transition.
[override virtual protected] bool QEventTransition::event(QEvent *e)▲
Reimplements: QAbstractTransition::event(QEvent *e).
QObject *QEventTransition::eventSource() const▲
Returns the event source associated with this event transition.
Getter function for property eventSource.
See Also▲
See also setEventSource()
[override virtual protected] bool QEventTransition::eventTest(QEvent *event)▲
Reimplements: QAbstractTransition::eventTest(QEvent *event).
QEvent::Type QEventTransition::eventType() const▲
Returns the event type that this event transition is associated with.
Getter function for property eventType.
See Also▲
See also setEventType()
[override virtual protected] void QEventTransition::onTransition(QEvent *event)▲
Reimplements: QAbstractTransition::onTransition(QEvent *event).
void QEventTransition::setEventSource(QObject *object)▲
Sets the event source associated with this event transition to be the given object.
Setter function for property eventSource.
See Also▲
See also eventSource()