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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#public-slots">Public Slots</a></li>
<li class="level1"><a href="#signals">Signals</a></li>
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<h1 class="title">Q3WidgetStack Class Reference</h1>
<!-- $$$Q3WidgetStack-brief -->
<p>The Q3WidgetStack class provides a stack of widgets of which only the top widget is user-visible. <a href="#details">More...</a></p>
<!-- @@@Q3WidgetStack -->
<pre class="cpp"> <span class="preprocessor">#include <Q3WidgetStack></span></pre><p><b>This class is part of the Qt 3 support library.</b> It is provided to keep old source code working. We strongly advise against using it in new code. See <a href="porting4.html#qwidgetstack">Porting to Qt 4</a> for more information.</p>
<p><b>Inherits: </b><a href="q3frame.html">Q3Frame</a>.</p>
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<li><a href="q3widgetstack-members.html">List of all members, including inherited members</a></li>
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<a name="public-functions"></a>
<h2>Public Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#Q3WidgetStack">Q3WidgetStack</a></b> ( QWidget * <i>parent</i>, const char * <i>name</i> = 0, Qt::WindowFlags <i>f</i> = 0 )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#dtor.Q3WidgetStack">~Q3WidgetStack</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#addWidget">addWidget</a></b> ( QWidget * <i>w</i>, int <i>id</i> = -1 )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#id">id</a></b> ( QWidget * <i>widget</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#removeWidget">removeWidget</a></b> ( QWidget * <i>w</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QWidget * </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#visibleWidget">visibleWidget</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QWidget * </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#widget">widget</a></b> ( int <i>id</i> ) const</td></tr>
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<a name="reimplemented-public-functions"></a>
<h2>Reimplemented Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual QSize </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#minimumSizeHint">minimumSizeHint</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#setVisible">setVisible</a></b> ( bool <i>visible</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QSize </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#sizeHint">sizeHint</a></b> () const</td></tr>
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<li class="fn">4 public functions inherited from <a href="q3frame.html#public-functions">Q3Frame</a></li>
<li class="fn">14 public functions inherited from <a href="qframe.html#public-functions">QFrame</a></li>
<li class="fn">221 public functions inherited from <a href="qwidget.html#public-functions">QWidget</a></li>
<li class="fn">29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>
<li class="fn">13 public functions inherited from <a href="qpaintdevice.html#public-functions">QPaintDevice</a></li>
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<h2>Public Slots</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#raiseWidget">raiseWidget</a></b> ( int <i>id</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#raiseWidget-2">raiseWidget</a></b> ( QWidget * <i>w</i> )</td></tr>
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<li class="fn">19 public slots inherited from <a href="qwidget.html#public-slots">QWidget</a></li>
<li class="fn">1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li>
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<a name="signals"></a>
<h2>Signals</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#aboutToShow">aboutToShow</a></b> ( int <i>id</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#aboutToShow-2">aboutToShow</a></b> ( QWidget * <i>widget</i> )</td></tr>
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<li class="fn">1 signal inherited from <a href="qwidget.html#signals">QWidget</a></li>
<li class="fn">1 signal inherited from <a href="qobject.html#signals">QObject</a></li>
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<h2>Protected Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#setChildGeometries">setChildGeometries</a></b> ()</td></tr>
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<h2>Reimplemented Protected Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#childEvent">childEvent</a></b> ( QChildEvent * <i>e</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#event">event</a></b> ( QEvent * <i>e</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#frameChanged">frameChanged</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="q3widgetstack.html#resizeEvent">resizeEvent</a></b> ( QResizeEvent * <i>e</i> )</td></tr>
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<li class="fn">5 protected functions inherited from <a href="q3frame.html#protected-functions">Q3Frame</a></li>
<li class="fn">3 protected functions inherited from <a href="qframe.html#protected-functions">QFrame</a></li>
<li class="fn">37 protected functions inherited from <a href="qwidget.html#protected-functions">QWidget</a></li>
<li class="fn">8 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li>
<li class="fn">1 protected function inherited from <a href="qpaintdevice.html#protected-functions">QPaintDevice</a></li>
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<h3>Additional Inherited Members</h3>
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<li class="fn">2 properties inherited from <a href="q3frame.html#properties">Q3Frame</a></li>
<li class="fn">6 properties inherited from <a href="qframe.html#properties">QFrame</a></li>
<li class="fn">58 properties inherited from <a href="qwidget.html#properties">QWidget</a></li>
<li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li>
<li class="fn">4 static public members inherited from <a href="qwidget.html#static-public-members">QWidget</a></li>
<li class="fn">7 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li>
<li class="fn">1 protected slot inherited from <a href="qwidget.html#protected-slots">QWidget</a></li>
</ul>
<a name="details"></a>
<!-- $$$Q3WidgetStack-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The Q3WidgetStack class provides a stack of widgets of which only the top widget is user-visible.</p>
<p>The application programmer can move any widget to the top of the stack at any time using <a href="q3widgetstack.html#raiseWidget">raiseWidget</a>(), and add or remove widgets using <a href="q3widgetstack.html#addWidget">addWidget</a>() and <a href="q3widgetstack.html#removeWidget">removeWidget</a>(). It is not sufficient to pass the widget stack as parent to a widget which should be inserted into the widgetstack.</p>
<p><a href="q3widgetstack.html#visibleWidget">visibleWidget</a>() is the <i>get</i> equivalent of <a href="q3widgetstack.html#raiseWidget">raiseWidget</a>(); it returns a pointer to the widget that is currently at the top of the stack.</p>
<p>Q3WidgetStack also provides the ability to manipulate widgets through application-specified integer IDs. You can also translate from widget pointers to IDs using <a href="q3widgetstack.html#id">id</a>() and from IDs to widget pointers using <a href="q3widgetstack.html#widget">widget</a>(). These numeric IDs are unique (per Q3WidgetStack, not globally), but Q3WidgetStack does not attach any additional meaning to them.</p>
<p>The default widget stack is frameless, but you can use the usual <a href="q3frame.html">Q3Frame</a> functions (such as <a href="qframe.html#setFrameStyle">setFrameStyle</a>()) to add a frame.</p>
<p>Q3WidgetStack provides a signal, <a href="q3widgetstack.html#aboutToShow">aboutToShow</a>(), which is emitted just before a managed widget is shown.</p>
</div>
<p><b>See also </b><a href="q3tabdialog.html">Q3TabDialog</a>, <a href="qtabwidget.html">QTabWidget</a>, <a href="qtabbar.html">QTabBar</a>, and <a href="q3frame.html">Q3Frame</a>.</p>
<!-- @@@Q3WidgetStack -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$Q3WidgetStack[overload1]$$$Q3WidgetStackQWidget*constchar*Qt::WindowFlags -->
<h3 class="fn"><a name="Q3WidgetStack"></a>Q3WidgetStack::<span class="name">Q3WidgetStack</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>parent</i>, const <span class="type">char</span> * <i>name</i> = 0, <span class="type"><a href="qt.html#WindowType-enum">Qt::WindowFlags</a></span> <i>f</i> = 0 )</h3>
<p>Constructs an empty widget stack.</p>
<p>The <i>parent</i>, <i>name</i> and <i>f</i> arguments are passed to the <a href="q3frame.html" class="compat">Q3Frame</a> constructor.</p>
<!-- @@@Q3WidgetStack -->
<!-- $$$~Q3WidgetStack[overload1]$$$~Q3WidgetStack -->
<h3 class="fn"><a name="dtor.Q3WidgetStack"></a>Q3WidgetStack::<span class="name">~Q3WidgetStack</span> ()</h3>
<p>Destroys the object and frees any allocated resources.</p>
<!-- @@@~Q3WidgetStack -->
<!-- $$$aboutToShow[overload1]$$$aboutToShowint -->
<h3 class="fn"><a name="aboutToShow"></a><span class="type">void</span> Q3WidgetStack::<span class="name">aboutToShow</span> ( <span class="type">int</span> <i>id</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted just before a managed widget is shown if that managed widget has an ID != -1. The <i>id</i> parameter is the numeric ID of the widget.</p>
<p>If you call <a href="q3widgetstack.html#visibleWidget">visibleWidget</a>() in a slot connected to aboutToShow(), the widget it returns is the one that is currently visible, not the one that is about to be shown.</p>
<!-- @@@aboutToShow -->
<!-- $$$aboutToShow$$$aboutToShowQWidget* -->
<h3 class="fn"><a name="aboutToShow-2"></a><span class="type">void</span> Q3WidgetStack::<span class="name">aboutToShow</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i> )<tt> [signal]</tt></h3>
<p>This is an overloaded function.</p>
<p>This signal is emitted just before a managed widget is shown. The argument is a pointer to the <i>widget</i>.</p>
<p>If you call <a href="q3widgetstack.html#visibleWidget">visibleWidget</a>() in a slot connected to <a href="q3widgetstack.html#aboutToShow">aboutToShow</a>(), the widget returned is the one that is currently visible, not the one that is about to be shown.</p>
<!-- @@@aboutToShow -->
<!-- $$$addWidget[overload1]$$$addWidgetQWidget*int -->
<h3 class="fn"><a name="addWidget"></a><span class="type">int</span> Q3WidgetStack::<span class="name">addWidget</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>w</i>, <span class="type">int</span> <i>id</i> = -1 )</h3>
<p>Adds widget <i>w</i> to this stack of widgets, with ID <i>id</i>.</p>
<p>If you pass an id >= 0 this ID is used. If you pass an <i>id</i> of -1 (the default), the widgets will be numbered automatically. If you pass -2 a unique negative integer will be generated. No widget has an ID of -1. Returns the ID or -1 on failure (e.g. <i>w</i> is 0).</p>
<p>If you pass an id that is already used, then a unique negative integer will be generated to prevent two widgets having the same id.</p>
<p>If <i>w</i> already exists in the stack the widget will be removed first.</p>
<p>If <i>w</i> is not a child of this <a href="q3widgetstack.html" class="compat">Q3WidgetStack</a> moves it using <a href="qwidget-qt3.html#reparent" class="compat">reparent</a>().</p>
<!-- @@@addWidget -->
<!-- $$$childEvent[overload1]$$$childEventQChildEvent* -->
<h3 class="fn"><a name="childEvent"></a><span class="type">void</span> Q3WidgetStack::<span class="name">childEvent</span> ( <span class="type"><a href="qchildevent.html">QChildEvent</a></span> * <i>e</i> )<tt> [virtual protected]</tt></h3>
<p>Reimplemented from <a href="qobject.html#childEvent">QObject::childEvent</a>().</p>
<!-- @@@childEvent -->
<!-- $$$event[overload1]$$$eventQEvent* -->
<h3 class="fn"><a name="event"></a><span class="type">bool</span> Q3WidgetStack::<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 -->
<!-- $$$frameChanged[overload1]$$$frameChanged -->
<h3 class="fn"><a name="frameChanged"></a><span class="type">void</span> Q3WidgetStack::<span class="name">frameChanged</span> ()<tt> [virtual protected]</tt></h3>
<p>Reimplemented from <a href="q3frame.html#frameChanged">Q3Frame::frameChanged</a>().</p>
<!-- @@@frameChanged -->
<!-- $$$id[overload1]$$$idQWidget* -->
<h3 class="fn"><a name="id"></a><span class="type">int</span> Q3WidgetStack::<span class="name">id</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i> ) const</h3>
<p>Returns the ID of the <i>widget</i>. Returns -1 if <i>widget</i> is 0 or is not being managed by this widget stack.</p>
<p><b>See also </b><a href="q3widgetstack.html#widget">widget</a>() and <a href="q3widgetstack.html#addWidget">addWidget</a>().</p>
<!-- @@@id -->
<!-- $$$minimumSizeHint[overload1]$$$minimumSizeHint -->
<h3 class="fn"><a name="minimumSizeHint"></a><span class="type"><a href="qsize.html">QSize</a></span> Q3WidgetStack::<span class="name">minimumSizeHint</span> () const<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qwidget.html#minimumSizeHint-prop">QWidget::minimumSizeHint</a>().</p>
<!-- @@@minimumSizeHint -->
<!-- $$$raiseWidget[overload1]$$$raiseWidgetint -->
<h3 class="fn"><a name="raiseWidget"></a><span class="type">void</span> Q3WidgetStack::<span class="name">raiseWidget</span> ( <span class="type">int</span> <i>id</i> )<tt> [slot]</tt></h3>
<p>Raises the widget with ID <i>id</i> to the top of the widget stack.</p>
<p><b>See also </b><a href="q3widgetstack.html#visibleWidget">visibleWidget</a>().</p>
<!-- @@@raiseWidget -->
<!-- $$$raiseWidget$$$raiseWidgetQWidget* -->
<h3 class="fn"><a name="raiseWidget-2"></a><span class="type">void</span> Q3WidgetStack::<span class="name">raiseWidget</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>w</i> )<tt> [slot]</tt></h3>
<p>This is an overloaded function.</p>
<p>Raises widget <i>w</i> to the top of the widget stack.</p>
<!-- @@@raiseWidget -->
<!-- $$$removeWidget[overload1]$$$removeWidgetQWidget* -->
<h3 class="fn"><a name="removeWidget"></a><span class="type">void</span> Q3WidgetStack::<span class="name">removeWidget</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>w</i> )</h3>
<p>Removes widget <i>w</i> from this stack of widgets. Does not delete <i>w</i>. If <i>w</i> is the currently visible widget, no other widget is substituted.</p>
<p><b>See also </b><a href="q3widgetstack.html#visibleWidget">visibleWidget</a>() and <a href="q3widgetstack.html#raiseWidget">raiseWidget</a>().</p>
<!-- @@@removeWidget -->
<!-- $$$resizeEvent[overload1]$$$resizeEventQResizeEvent* -->
<h3 class="fn"><a name="resizeEvent"></a><span class="type">void</span> Q3WidgetStack::<span class="name">resizeEvent</span> ( <span class="type"><a href="qresizeevent.html">QResizeEvent</a></span> * <i>e</i> )<tt> [virtual protected]</tt></h3>
<p>Reimplemented from <a href="qwidget.html#resizeEvent">QWidget::resizeEvent</a>().</p>
<!-- @@@resizeEvent -->
<!-- $$$setChildGeometries[overload1]$$$setChildGeometries -->
<h3 class="fn"><a name="setChildGeometries"></a><span class="type">void</span> Q3WidgetStack::<span class="name">setChildGeometries</span> ()<tt> [virtual protected]</tt></h3>
<p>Fixes up the children's geometries.</p>
<!-- @@@setChildGeometries -->
<!-- $$$setVisible[overload1]$$$setVisiblebool -->
<h3 class="fn"><a name="setVisible"></a><span class="type">void</span> Q3WidgetStack::<span class="name">setVisible</span> ( <span class="type">bool</span> <i>visible</i> )<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qwidget.html#visible-prop">QWidget::setVisible</a>().</p>
<!-- @@@setVisible -->
<!-- $$$sizeHint[overload1]$$$sizeHint -->
<h3 class="fn"><a name="sizeHint"></a><span class="type"><a href="qsize.html">QSize</a></span> Q3WidgetStack::<span class="name">sizeHint</span> () const<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qwidget.html#sizeHint-prop">QWidget::sizeHint</a>().</p>
<!-- @@@sizeHint -->
<!-- $$$visibleWidget[overload1]$$$visibleWidget -->
<h3 class="fn"><a name="visibleWidget"></a><span class="type"><a href="qwidget.html">QWidget</a></span> * Q3WidgetStack::<span class="name">visibleWidget</span> () const</h3>
<p>Returns the currently visible widget (the one at the top of the stack), or 0 if nothing is currently being shown.</p>
<p><b>See also </b><a href="q3widgetstack.html#aboutToShow">aboutToShow</a>(), <a href="q3widgetstack.html#id">id</a>(), and <a href="q3widgetstack.html#raiseWidget">raiseWidget</a>().</p>
<!-- @@@visibleWidget -->
<!-- $$$widget[overload1]$$$widgetint -->
<h3 class="fn"><a name="widget"></a><span class="type"><a href="qwidget.html">QWidget</a></span> * Q3WidgetStack::<span class="name">widget</span> ( <span class="type">int</span> <i>id</i> ) const</h3>
<p>Returns the widget with ID <i>id</i>. Returns 0 if this widget stack does not manage a widget with ID <i>id</i>.</p>
<p><b>See also </b><a href="q3widgetstack.html#id">id</a>() and <a href="q3widgetstack.html#addWidget">addWidget</a>().</p>
<!-- @@@widget -->
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