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Breadcrumbs go here --> <li><a href="modules.html">Modules</a></li> <li><a href="qtcore.html">QtCore</a></li> <li>QEventTransition</li> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#properties">Properties</a></li> <li class="level1"><a href="#public-functions">Public Functions</a></li> <li class="level1"><a href="#protected-functions">Protected Functions</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> <li class="level2"><a href="#subclassing">Subclassing</a></li> </ul> </div> <h1 class="title">QEventTransition Class Reference</h1> <!-- $$$QEventTransition-brief --> <p>The QEventTransition class provides a <a href="qobject.html">QObject</a>-specific transition for Qt events. <a href="#details">More...</a></p> <!-- @@@QEventTransition --> <pre class="cpp"> <span class="preprocessor">#include <QEventTransition></span></pre><p><b>Inherits: </b><a href="qabstracttransition.html">QAbstractTransition</a>.</p> <p><b>Inherited by: </b><a href="qkeyeventtransition.html">QKeyEventTransition</a> and <a href="qmouseeventtransition.html">QMouseEventTransition</a>.</p> <p>This class was introduced in Qt 4.6.</p> <ul> <li><a href="qeventtransition-members.html">List of all members, including inherited members</a></li> </ul> <a name="properties"></a> <h2>Properties</h2> <ul> <li class="fn"><b><a href="qeventtransition.html#eventSource-prop">eventSource</a></b> : QObject *</li> <li class="fn"><b><a href="qeventtransition.html#eventType-prop">eventType</a></b> : QEvent::Type</li> </ul> <ul> <li class="fn">3 properties inherited from <a href="qabstracttransition.html#properties">QAbstractTransition</a></li> <li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li> </ul> <a name="public-functions"></a> <h2>Public Functions</h2> <table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#QEventTransition">QEventTransition</a></b> ( QState * <i>sourceState</i> = 0 )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#QEventTransition-2">QEventTransition</a></b> ( QObject * <i>object</i>, QEvent::Type <i>type</i>, QState * <i>sourceState</i> = 0 )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#dtor.QEventTransition">~QEventTransition</a></b> ()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QObject * </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#eventSource-prop">eventSource</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QEvent::Type </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#eventType-prop">eventType</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#eventSource-prop">setEventSource</a></b> ( QObject * <i>object</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#eventType-prop">setEventType</a></b> ( QEvent::Type <i>type</i> )</td></tr> </table> <ul> <li class="fn">9 public functions inherited from <a href="qabstracttransition.html#public-functions">QAbstractTransition</a></li> <li class="fn">29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li> </ul> <a name="reimplemented-protected-functions"></a> <h2>Reimplemented Protected Functions</h2> <table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#event">event</a></b> ( QEvent * <i>e</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#eventTest">eventTest</a></b> ( QEvent * <i>event</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qeventtransition.html#onTransition">onTransition</a></b> ( QEvent * <i>event</i> )</td></tr> </table> <ul> <li class="fn">3 protected functions inherited from <a href="qabstracttransition.html#protected-functions">QAbstractTransition</a></li> <li class="fn">8 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li> </ul> <h3>Additional Inherited Members</h3> <ul> <li class="fn">1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li> <li class="fn">1 signal inherited from <a href="qabstracttransition.html#signals">QAbstractTransition</a></li> <li class="fn">1 signal inherited from <a href="qobject.html#signals">QObject</a></li> <li class="fn">7 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li> <li class="fn">3 protected functions inherited from <a href="qabstracttransition.html#protected-functions">QAbstractTransition</a></li> <li class="fn">8 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li> </ul> <a name="details"></a> <!-- $$$QEventTransition-description --> <div class="descr"> <h2>Detailed Description</h2> <p>The QEventTransition class provides a <a href="qobject.html">QObject</a>-specific transition for Qt events.</p> <p>A QEventTransition object binds an event to a particular <a href="qobject.html">QObject</a>. QEventTransition is part of <a href="statemachine-api.html">The State Machine Framework</a>.</p> <p>Example:</p> <pre class="cpp"> <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>button <span class="operator">=</span> <span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>; <span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>s1 <span class="operator">=</span> <span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>; <span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>s2 <span class="operator">=</span> <span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>; <span class="comment">// If in s1 and the button receives an Enter event, transition to s2</span> <span class="type">QEventTransition</span> <span class="operator">*</span>enterTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QEventTransition</span>(button<span class="operator">,</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>Enter); enterTransition<span class="operator">-</span><span class="operator">></span><a href="qabstracttransition.html#targetState-prop">setTargetState</a>(s2); s1<span class="operator">-</span><span class="operator">></span>addTransition(enterTransition); <span class="comment">// If in s2 and the button receives an Exit event, transition back to s1</span> <span class="type">QEventTransition</span> <span class="operator">*</span>leaveTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QEventTransition</span>(button<span class="operator">,</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>Leave); leaveTransition<span class="operator">-</span><span class="operator">></span><a href="qabstracttransition.html#targetState-prop">setTargetState</a>(s1); s2<span class="operator">-</span><span class="operator">></span>addTransition(leaveTransition);</pre> <a name="subclassing"></a> <h3>Subclassing</h3> <p>When reimplementing the <a href="qeventtransition.html#eventTest">eventTest</a>() function, you should first call the base implementation to verify that the event is a <a href="qstatemachine-wrappedevent.html">QStateMachine::WrappedEvent</a> for the proper object and event type. You may then cast the event to a <a href="qstatemachine-wrappedevent.html">QStateMachine::WrappedEvent</a> and get the original event by calling <a href="qstatemachine-wrappedevent.html#event">QStateMachine::WrappedEvent::event</a>(), and perform additional checks on that object.</p> </div> <p><b>See also </b><a href="qstate.html#addTransition">QState::addTransition</a>().</p> <!-- @@@QEventTransition --> <div class="prop"> <h2>Property Documentation</h2> <!-- $$$eventSource-prop$$$eventSource$$$setEventSourceQObject* --> <h3 class="fn"><a name="eventSource-prop"></a><span class="name">eventSource</span> : <span class="type"><a href="qobject.html">QObject</a></span> *</h3> <p>This property holds the event source that this event transition is associated with.</p> <p><b>Access functions:</b></p> <table class="alignedsummary"> <tr><td class="memItemLeft topAlign rightAlign"> QObject * </td><td class="memItemRight bottomAlign"><span class="name"><b>eventSource</b></span> () const</td></tr> <tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setEventSource</b></span> ( QObject * <i>object</i> )</td></tr> </table> <!-- @@@eventSource --> <!-- $$$eventType-prop$$$eventType$$$setEventTypeQEvent::Type --> <h3 class="fn"><a name="eventType-prop"></a><span class="name">eventType</span> : <span class="type"><a href="qevent.html#Type-enum">QEvent::Type</a></span></h3> <p>This property holds the type of event that this event transition is associated with.</p> <p><b>Access functions:</b></p> <table class="alignedsummary"> <tr><td class="memItemLeft topAlign rightAlign"> QEvent::Type </td><td class="memItemRight bottomAlign"><span class="name"><b>eventType</b></span> () const</td></tr> <tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setEventType</b></span> ( QEvent::Type <i>type</i> )</td></tr> </table> <!-- @@@eventType --> </div> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$QEventTransition[overload1]$$$QEventTransitionQState* --> <h3 class="fn"><a name="QEventTransition"></a>QEventTransition::<span class="name">QEventTransition</span> ( <span class="type"><a href="qstate.html">QState</a></span> * <i>sourceState</i> = 0 )</h3> <p>Constructs a new <a href="qeventtransition.html">QEventTransition</a> object with the given <i>sourceState</i>.</p> <!-- @@@QEventTransition --> <!-- $$$QEventTransition$$$QEventTransitionQObject*QEvent::TypeQState* --> <h3 class="fn"><a name="QEventTransition-2"></a>QEventTransition::<span class="name">QEventTransition</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>object</i>, <span class="type"><a href="qevent.html#Type-enum">QEvent::Type</a></span> <i>type</i>, <span class="type"><a href="qstate.html">QState</a></span> * <i>sourceState</i> = 0 )</h3> <p>Constructs a new <a href="qeventtransition.html">QEventTransition</a> object associated with events of the given <i>type</i> for the given <i>object</i>, and with the given <i>sourceState</i>.</p> <!-- @@@QEventTransition --> <!-- $$$~QEventTransition[overload1]$$$~QEventTransition --> <h3 class="fn"><a name="dtor.QEventTransition"></a>QEventTransition::<span class="name">~QEventTransition</span> ()</h3> <p>Destroys this <a href="qobject.html">QObject</a> event transition.</p> <!-- @@@~QEventTransition --> <!-- $$$event[overload1]$$$eventQEvent* --> <h3 class="fn"><a name="event"></a><span class="type">bool</span> QEventTransition::<span class="name">event</span> ( <span class="type"><a href="qevent.html">QEvent</a></span> * <i>e</i> )<tt> [virtual protected]</tt></h3> <p>Reimplemented from <a href="qobject.html#event">QObject::event</a>().</p> <!-- @@@event --> <!-- $$$eventTest[overload1]$$$eventTestQEvent* --> <h3 class="fn"><a name="eventTest"></a><span class="type">bool</span> QEventTransition::<span class="name">eventTest</span> ( <span class="type"><a href="qevent.html">QEvent</a></span> * <i>event</i> )<tt> [virtual protected]</tt></h3> <p>Reimplemented from <a href="qabstracttransition.html#eventTest">QAbstractTransition::eventTest</a>().</p> <!-- @@@eventTest --> <!-- $$$onTransition[overload1]$$$onTransitionQEvent* --> <h3 class="fn"><a name="onTransition"></a><span class="type">void</span> QEventTransition::<span class="name">onTransition</span> ( <span class="type"><a href="qevent.html">QEvent</a></span> * <i>event</i> )<tt> [virtual protected]</tt></h3> <p>Reimplemented from <a href="qabstracttransition.html#onTransition">QAbstractTransition::onTransition</a>().</p> <!-- @@@onTransition --> </div> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. 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