<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qboxlayout.cpp --> <title>Qt 4.8: QVBoxLayout Class Reference</title> <link rel="stylesheet" type="text/css" href="style/style.css" /> <script src="scripts/jquery.js" type="text/javascript"></script> <script src="scripts/functions.js" type="text/javascript"></script> <link rel="stylesheet" type="text/css" href="style/superfish.css" /> <link rel="stylesheet" type="text/css" href="style/narrow.css" /> <!--[if IE]> <meta name="MSSmartTagsPreventParsing" content="true"> <meta http-equiv="imagetoolbar" content="no"> <![endif]--> <!--[if lt IE 7]> <link rel="stylesheet" type="text/css" href="style/style_ie6.css"> <![endif]--> <!--[if IE 7]> <link rel="stylesheet" type="text/css" href="style/style_ie7.css"> <![endif]--> <!--[if IE 8]> <link rel="stylesheet" type="text/css" href="style/style_ie8.css"> <![endif]--> <script src="scripts/superfish.js" type="text/javascript"></script> <script src="scripts/narrow.js" type="text/javascript"></script> </head> <body class="" onload="CheckEmptyAndLoadList();"> <div class="header" id="qtdocheader"> <div class="content"> <div id="nav-logo"> <a href="index.html">Home</a></div> <a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a> <div id="narrowsearch"></div> <div id="nav-topright"> <ul> <li class="nav-topright-home"><a href="http://qt.digia.com/">Qt HOME</a></li> <li class="nav-topright-dev"><a href="http://qt-project.org/">DEV</a></li> <li class="nav-topright-doc nav-topright-doc-active"><a href="http://qt-project.org/doc/"> DOC</a></li> <li class="nav-topright-blog"><a href="http://blog.qt.digia.com/">BLOG</a></li> </ul> </div> <div id="shortCut"> <ul> <li class="shortCut-topleft-inactive"><span><a href="index.html">Qt 4.8</a></span></li> <li class="shortCut-topleft-active"><a href="http://qt-project.org/doc/">ALL VERSIONS </a></li> </ul> </div> <ul class="sf-menu" id="narrowmenu"> <li><a href="#">API Lookup</a> <ul> <li><a href="classes.html">Class index</a></li> <li><a href="functions.html">Function index</a></li> <li><a href="modules.html">Modules</a></li> <li><a href="namespaces.html">Namespaces</a></li> <li><a href="qtglobal.html">Global Declarations</a></li> <li><a href="qdeclarativeelements.html">QML elements</a></li> </ul> </li> <li><a href="#">Qt Topics</a> <ul> <li><a href="qt-basic-concepts.html">Programming with Qt</a></li> <li><a href="qtquick.html">Device UIs & Qt Quick</a></li> <li><a href="qt-gui-concepts.html">UI Design with Qt</a></li> <li><a href="supported-platforms.html">Supported Platforms</a></li> <li><a href="technology-apis.html">Qt and Key Technologies</a></li> <li><a href="best-practices.html">How-To's and Best Practices</a></li> </ul> </li> <li><a href="#">Examples</a> <ul> <li><a href="all-examples.html">Examples</a></li> <li><a href="tutorials.html">Tutorials</a></li> <li><a href="demos.html">Demos</a></li> <li><a href="qdeclarativeexamples.html">QML Examples</a></li> </ul> </li> </ul> </div> </div> <div class="wrapper"> <div class="hd"> <span></span> </div> <div class="bd group"> <div class="sidebar"> <div class="searchlabel"> Search index:</div> <div class="search" id="sidebarsearch"> <form id="qtdocsearch" action="" onsubmit="return false;"> <fieldset> <input type="text" name="searchstring" id="pageType" value="" /> <div id="resultdialog"> <a href="#" id="resultclose">Close</a> <p id="resultlinks" class="all"><a href="#" id="showallresults">All</a> | <a href="#" id="showapiresults">API</a> | <a href="#" id="showarticleresults">Articles</a> | <a href="#" id="showexampleresults">Examples</a></p> <p id="searchcount" class="all"><span id="resultcount"></span><span id="apicount"></span><span id="articlecount"></span><span id="examplecount"></span> results:</p> <ul id="resultlist" class="all"> </ul> </div> </fieldset> </form> </div> <div class="box first bottombar" id="lookup"> <h2 title="API Lookup"><span></span> API Lookup</h2> <div id="list001" class="list"> <ul id="ul001" > <li class="defaultLink"><a href="classes.html">Class index</a></li> <li class="defaultLink"><a href="functions.html">Function index</a></li> <li class="defaultLink"><a href="modules.html">Modules</a></li> <li class="defaultLink"><a href="namespaces.html">Namespaces</a></li> <li class="defaultLink"><a href="qtglobal.html">Global Declarations</a></li> <li class="defaultLink"><a href="qdeclarativeelements.html">QML elements</a></li> </ul> </div> </div> <div class="box bottombar" id="topics"> <h2 title="Qt Topics"><span></span> Qt Topics</h2> <div id="list002" class="list"> <ul id="ul002" > <li class="defaultLink"><a href="qt-basic-concepts.html">Programming with Qt</a></li> <li class="defaultLink"><a href="qtquick.html">Device UIs & Qt Quick</a></li> <li class="defaultLink"><a href="qt-gui-concepts.html">UI Design with Qt</a></li> <li class="defaultLink"><a href="supported-platforms.html">Supported Platforms</a></li> <li class="defaultLink"><a href="technology-apis.html">Qt and Key Technologies</a></li> <li class="defaultLink"><a href="best-practices.html">How-To's and Best Practices</a></li> </ul> </div> </div> <div class="box" id="examples"> <h2 title="Examples"><span></span> Examples</h2> <div id="list003" class="list"> <ul id="ul003"> <li class="defaultLink"><a href="all-examples.html">Examples</a></li> <li class="defaultLink"><a href="tutorials.html">Tutorials</a></li> <li class="defaultLink"><a href="demos.html">Demos</a></li> <li class="defaultLink"><a href="qdeclarativeexamples.html">QML Examples</a></li> </ul> </div> </div> </div> <div class="wrap"> <div class="toolbar"> <div class="breadcrumb toolblock"> <ul> <li class="first"><a href="index.html">Home</a></li> <!-- Breadcrumbs go here --> <li><a href="modules.html">Modules</a></li> <li><a href="qtgui.html">QtGui</a></li> <li>QVBoxLayout</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="#public-functions">Public Functions</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <h1 class="title">QVBoxLayout Class Reference</h1> <!-- $$$QVBoxLayout-brief --> <p>The QVBoxLayout class lines up widgets vertically. <a href="#details">More...</a></p> <!-- @@@QVBoxLayout --> <pre class="cpp"> <span class="preprocessor">#include <QVBoxLayout></span></pre><p><b>Inherits: </b><a href="qboxlayout.html">QBoxLayout</a>.</p> <ul> <li><a href="qvboxlayout-members.html">List of all members, including inherited members</a></li> <li><a href="qvboxlayout-qt3.html">Qt 3 support members</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="qvboxlayout.html#QVBoxLayout">QVBoxLayout</a></b> ()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qvboxlayout.html#QVBoxLayout-2">QVBoxLayout</a></b> ( QWidget * <i>parent</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qvboxlayout.html#dtor.QVBoxLayout">~QVBoxLayout</a></b> ()</td></tr> </table> <ul> <li class="fn">32 public functions inherited from <a href="qboxlayout.html#public-functions">QBoxLayout</a></li> <li class="fn">35 public functions inherited from <a href="qlayout.html#public-functions">QLayout</a></li> <li class="fn">29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li> <li class="fn">17 public functions inherited from <a href="qlayoutitem.html#public-functions">QLayoutItem</a></li> </ul> <h3>Additional Inherited Members</h3> <ul> <li class="fn">2 properties inherited from <a href="qlayout.html#properties">QLayout</a></li> <li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li> <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="qobject.html#signals">QObject</a></li> <li class="fn">1 static public member inherited from <a href="qlayout.html#static-public-members">QLayout</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 function inherited from <a href="qboxlayout.html#protected-functions">QBoxLayout</a></li> <li class="fn">4 protected functions inherited from <a href="qlayout.html#protected-functions">QLayout</a></li> <li class="fn">8 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li> </ul> <a name="details"></a> <!-- $$$QVBoxLayout-description --> <div class="descr"> <h2>Detailed Description</h2> <p>The QVBoxLayout class lines up widgets vertically.</p> <p>This class is used to construct vertical box layout objects. See <a href="qboxlayout.html">QBoxLayout</a> for details.</p> <p>The simplest use of the class is like this:</p> <pre class="cpp"> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>window <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qwidget.html">QWidget</a></span>; <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>button1 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(<span class="string">"One"</span>); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>button2 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(<span class="string">"Two"</span>); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>button3 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(<span class="string">"Three"</span>); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>button4 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(<span class="string">"Four"</span>); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>button5 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(<span class="string">"Five"</span>); <span class="type">QVBoxLayout</span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVBoxLayout</span>; layout<span class="operator">-</span><span class="operator">></span>addWidget(button1); layout<span class="operator">-</span><span class="operator">></span>addWidget(button2); layout<span class="operator">-</span><span class="operator">></span>addWidget(button3); layout<span class="operator">-</span><span class="operator">></span>addWidget(button4); layout<span class="operator">-</span><span class="operator">></span>addWidget(button5); window<span class="operator">-</span><span class="operator">></span>setLayout(layout); window<span class="operator">-</span><span class="operator">></span>show();</pre> <p>First, we create the widgets we want in the layout. Then, we create the QVBoxLayout object and add the widgets into the layout. Finally, we call <a href="qwidget.html#setLayout">QWidget::setLayout</a>() to install the QVBoxLayout object onto the widget. At that point, the widgets in the layout are reparented to have <tt>window</tt> as their parent.</p> <p class="centerAlign"><img src="images/qvboxlayout-with-5-children.png" alt="Horizontal box layout with five child widgets" /></p></div> <p><b>See also </b><a href="qhboxlayout.html">QHBoxLayout</a>, <a href="qgridlayout.html">QGridLayout</a>, <a href="qstackedlayout.html">QStackedLayout</a>, <a href="layout.html">Layout Management</a>, and <a href="layouts-basiclayouts.html">Basic Layouts Example</a>.</p> <!-- @@@QVBoxLayout --> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$QVBoxLayout[overload1]$$$QVBoxLayout --> <h3 class="fn"><a name="QVBoxLayout"></a>QVBoxLayout::<span class="name">QVBoxLayout</span> ()</h3> <p>Constructs a new vertical box. You must add it to another layout.</p> <!-- @@@QVBoxLayout --> <!-- $$$QVBoxLayout$$$QVBoxLayoutQWidget* --> <h3 class="fn"><a name="QVBoxLayout-2"></a>QVBoxLayout::<span class="name">QVBoxLayout</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>parent</i> )</h3> <p>Constructs a new top-level vertical box with parent <i>parent</i>.</p> <!-- @@@QVBoxLayout --> <!-- $$$~QVBoxLayout[overload1]$$$~QVBoxLayout --> <h3 class="fn"><a name="dtor.QVBoxLayout"></a>QVBoxLayout::<span class="name">~QVBoxLayout</span> ()</h3> <p>Destroys this box layout.</p> <p>The layout's widgets aren't destroyed.</p> <!-- @@@~QVBoxLayout --> </div> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.</p> <br /> <p> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.</p> <p> Documentation sources may be obtained from <a href="http://www.qt-project.org"> www.qt-project.org</a>.</p> <br /> <p> Qt and respective logos are trademarks of The Qt Company Ltd in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. <a title="Privacy Policy" href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p> </div> <script src="scripts/functions.js" type="text/javascript"></script> </body> </html>