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<html><head><title>QActionEvent Class Reference</title><style>h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm }
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</style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr /><td align="left" valign="top" width="32"><img align="left" border="0" height="32" src="images/rb-logo.png" width="32" /></td><td width="1">  </td><td class="postheader" valign="center"><a href="../pyqt4ref.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a></td></table><h1 align="center">QActionEvent Class Reference<br /><sup><sup>[<a href="qtgui.html">QtGui</a> module]</sup></sup></h1><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>
<p>Inherits <a href="qevent.html">QEvent</a>.</p><h3>Methods</h3><ul><li><div class="fn" /><b><a href="qactionevent.html#QActionEvent">__init__</a></b> (<i>self</i>, int, QAction, QAction <i>before</i> = None)</li><li><div class="fn" /><b><a href="qactionevent.html#QActionEvent-2">__init__</a></b> (<i>self</i>, QActionEvent)</li><li><div class="fn" />QAction <b><a href="qactionevent.html#action">action</a></b> (<i>self</i>)</li><li><div class="fn" />QAction <b><a href="qactionevent.html#before">before</a></b> (<i>self</i>)</li></ul><a name="details" /><hr /><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>
<hr /><h2>Method Documentation</h2><h3 class="fn"><a name="QActionEvent" />QActionEvent.__init__ (<i>self</i>, int, <a href="qaction.html">QAction</a>, <a href="qaction.html">QAction</a> <i>before</i> = None)</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>
<a name="//apple_ref/cpp/instm/QActionEvent/action" />
<h3 class="fn"><a name="QActionEvent-2" />QActionEvent.__init__ (<i>self</i>, <a href="qactionevent.html">QActionEvent</a>)</h3><h3 class="fn"><a name="action" /><a href="qaction.html">QAction</a> QActionEvent.action (<i>self</i>)</h3><p>Returns the action that is changed, added, or removed.</p>
<p>See also <a href="qactionevent.html#before">before</a>().</p>
<a name="//apple_ref/cpp/instm/QActionEvent/before" />
<h3 class="fn"><a name="before" /><a href="qaction.html">QAction</a> QActionEvent.before (<i>self</i>)</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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