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<p>The QActionEvent class provides an event that is generated when a <a href="qaction.html">QAction</a> is added, removed, or changed. <a href="#details">More...</a></p>
<pre> #include <QActionEvent></pre><p>Inherits <a href="qevent.html">QEvent</a>.</p>
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<li><a href="qactionevent-members.html">List of all members, including inherited members</a></li>
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<h3>Public Functions</h3>
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<li><div class="fn"/><b><a href="qactionevent.html#QActionEvent">QActionEvent</a></b> ( int <i>type</i>, QAction * <i>action</i>, QAction * <i>before</i> = 0 )</li>
<li><div class="fn"/>QAction * <b><a href="qactionevent.html#action">action</a></b> () const</li>
<li><div class="fn"/>QAction * <b><a href="qactionevent.html#before">before</a></b> () const</li>
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<li><div class="fn"/>6 public functions inherited from <a href="qevent.html#public-functions">QEvent</a></li>
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<h3>Additional Inherited Members</h3>
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<li><div class="fn"/>1 property inherited from <a href="qevent.html#properties">QEvent</a></li>
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<h2>Detailed Description</h2>
<p>The QActionEvent class provides an event that is generated when a <a href="qaction.html">QAction</a> is added, removed, or changed.</p>
<p>Actions can be added to widgets using <a href="qwidget.html#addAction">QWidget::addAction</a>(). This generates an <a href="qevent.html#Type-enum">ActionAdded</a> event, which you can handle to provide custom behavior. For example, <a href="qtoolbar.html">QToolBar</a> reimplements <a href="qwidget.html#actionEvent">QWidget::actionEvent</a>() to create <a href="qtoolbutton.html">QToolButton</a>s for the actions.</p>
<p>See also <a href="qaction.html">QAction</a>, <a href="qwidget.html#addAction">QWidget::addAction</a>(), <a href="qwidget.html#removeAction">QWidget::removeAction</a>(), and <a href="qwidget.html#actions">QWidget::actions</a>().</p>
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<h2>Member Function Documentation</h2>
<h3 class="fn"><a name="QActionEvent"></a>QActionEvent::QActionEvent ( int <i>type</i>, <a href="qaction.html">QAction</a> * <i>action</i>, <a href="qaction.html">QAction</a> * <i>before</i> = 0 )</h3>
<p>Constructs an action event. The <i>type</i> can be <a href="qevent.html#Type-enum">ActionChanged</a>, <a href="qevent.html#Type-enum">ActionAdded</a>, or <a href="qevent.html#Type-enum">ActionRemoved</a>.</p>
<p><i>action</i> is the action that is changed, added, or removed. If <i>type</i> is <a href="qevent.html#Type-enum">ActionAdded</a>, the action is to be inserted before the action <i>before</i>. If <i>before</i> is 0, the action is appended.</p>
<h3 class="fn"><a name="action"></a><a href="qaction.html">QAction</a> * QActionEvent::action () const</h3>
<p>Returns the action that is changed, added, or removed.</p>
<p>See also <a href="qactionevent.html#before">before</a>().</p>
<h3 class="fn"><a name="before"></a><a href="qaction.html">QAction</a> * QActionEvent::before () const</h3>
<p>If <a href="qevent.html#type">type</a>() is <a href="qevent.html#Type-enum">ActionAdded</a>, returns the action that should appear before <a href="qactionevent.html#action">action</a>(). If this function returns 0, the action should be appended to already existing actions on the same widget.</p>
<p>See also <a href="qactionevent.html#action">action</a>() and <a href="qwidget.html#actions">QWidget::actions</a>().</p>
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