[QtCore module]

该QEventTransition类提供了一个QObject特定于Qt的事件过渡。More…

继承QAbstractTransition。

通过继承QKeyEventTransition和QMouseEventTransition。

Methods

  • __init__ (self, QState sourceState = None)
  • __init__ (self, QObject object, QEvent.Type type, QState sourceState = None)
  • bool event (self, QEvent e)
  • QObject eventSource (self)
  • bool eventTest (self, QEvent event)
  • QEvent.Type eventType (self)
  • onTransition (self, QEvent event)
  • setEventSource (self, QObject object)
  • setEventType (self, QEvent.Type type)

Detailed Description

该QEventTransition类提供了一个QObject特定于Qt的事件过渡。

一个QEventTransition对象的事件绑定到一个特定的QObject。 QEventTransition是一部分The State Machine Framework。

例如：

  1.  [QPushButton](docs_qpushbutton.html) *button = ...;
  2.  [QState](docs_qstate.html) *s1 = ...;
  3.  [QState](docs_qstate.html) *s2 = ...;
  4.  // If in s1 and the button receives an Enter event, transition to s2
  5.  QEventTransition *enterTransition = new QEventTransition(button, [QEvent](docs_qevent.html).Enter);
  6.  enterTransition->setTargetState(s2);
  7.  s1->addTransition(enterTransition);
  8.  // If in s2 and the button receives an Exit event, transition back to s1
  9.  QEventTransition *leaveTransition = new QEventTransition(button, [QEvent](docs_qevent.html).Leave);
  10.  leaveTransition->setTargetState(s1);
  11.  s2->addTransition(leaveTransition);

Subclassing

当重新实现eventTest（ ）函数，你应该先调用基实现，以验证该事件是QStateMachine.WrappedEvent为正确的对象和事件类型。然后，您可投的情况下，以一QStateMachine.WrappedEvent并通过调用得到的原始事件QStateMachine.WrappedEvent.event（ ） ，并执行该对象上的额外检查。

Method Documentation

  1. QEventTransition.__init__ (self, QState sourceState = None)

该sourceState的说法，如果不是没有，原因self通过Qt的，而不是PyQt的拥有。

构造一个新的QEventTransition与给定对象sourceState。

  1. QEventTransition.__init__ (self, QObject object, QEvent.Type type, QState sourceState = None)

该sourceState的说法，如果不是没有，原因self通过Qt的，而不是PyQt的拥有。

构造一个新的QEventTransition与给定的事件相关联的对象type对于给定的object，并用给定的sourceState。

  1. bool QEventTransition.event (self, QEvent e)

从重新实现QObject.event（ ） 。

  1. QObject QEventTransition.eventSource (self)

[

  1. bool QEventTransition.eventTest (self, QEvent event)

](docs_qobject.html)

从重新实现QAbstractTransition.eventTest（ ） 。

  1. QEvent.Type QEventTransition.eventType (self)

[

  1. QEventTransition.onTransition (self, QEvent event)

](docs_qevent.html#Type-enum)

从重新实现QAbstractTransition.onTransition（ ） 。

  1. QEventTransition.setEventSource (self, QObject object)
  1. QEventTransition.setEventType (self, QEvent.Type type)