283 lines
21 KiB
HTML
283 lines
21 KiB
HTML
<?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" />
|
|
<!-- widgets-tutorial.qdoc -->
|
|
<title>Qt 4.8: Widgets Tutorial - Nested Layouts</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="all-examples.html">Examples</a></li>
|
|
<li>Widgets Tutorial - Nested Layouts</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="#setting-up-the-model">Setting up the Model</a></li>
|
|
</ul>
|
|
</div>
|
|
<h1 class="title">Widgets Tutorial - Nested Layouts</h1>
|
|
<span class="subtitle"></span>
|
|
<!-- $$$tutorials/widgets/nestedlayouts-description -->
|
|
<div class="descr"> <a name="details"></a>
|
|
<p>Files:</p>
|
|
<ul>
|
|
<li><a href="tutorials-widgets-nestedlayouts-main-cpp.html">tutorials/widgets/nestedlayouts/main.cpp</a></li>
|
|
<li><a href="tutorials-widgets-nestedlayouts-nestedlayouts-pro.html">tutorials/widgets/nestedlayouts/nestedlayouts.pro</a></li>
|
|
</ul>
|
|
<p>Just as widgets can contain other widgets, layouts can be used to provide different levels of grouping for widgets. Here, we want to display a label alongside a line edit at the top of a window, above a table view showing the results of a query.</p>
|
|
<p>We achieve this by creating two layouts: <tt>queryLayout</tt> is a <a href="qhboxlayout.html">QHBoxLayout</a> that contains <a href="qlabel.html">QLabel</a> and <a href="qlineedit.html">QLineEdit</a> widgets placed side-by-side; <tt>mainLayout</tt> is a <a href="qvboxlayout.html">QVBoxLayout</a> that contains <tt>queryLayout</tt> and a <a href="qtableview.html">QTableView</a> arranged vertically.</p>
|
|
<div class="qt-code"><table class="generic">
|
|
<tr valign="top" class="odd"><td ><pre class="cpp"> <span class="preprocessor">#include <QtGui></span>
|
|
|
|
<span class="type">int</span> main(<span class="type">int</span> argc<span class="operator">,</span> <span class="type">char</span> <span class="operator">*</span>argv<span class="operator">[</span><span class="operator">]</span>)
|
|
{
|
|
<span class="type"><a href="qapplication.html">QApplication</a></span> app(argc<span class="operator">,</span> argv);
|
|
<span class="type"><a href="qwidget.html">QWidget</a></span> window;
|
|
|
|
<span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>queryLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(
|
|
<span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>translate(<span class="string">"nestedlayouts"</span><span class="operator">,</span> <span class="string">"Query:"</span>));
|
|
<span class="type"><a href="qlineedit.html">QLineEdit</a></span> <span class="operator">*</span>queryEdit <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineedit.html">QLineEdit</a></span>();
|
|
<span class="type"><a href="qtableview.html">QTableView</a></span> <span class="operator">*</span>resultView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtableview.html">QTableView</a></span>();
|
|
|
|
<span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>queryLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>();
|
|
queryLayout<span class="operator">-</span><span class="operator">></span>addWidget(queryLabel);
|
|
queryLayout<span class="operator">-</span><span class="operator">></span>addWidget(queryEdit);
|
|
|
|
<span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>();
|
|
mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(queryLayout);
|
|
mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(resultView);
|
|
window<span class="operator">.</span>setLayout(mainLayout);
|
|
|
|
<span class="comment">// Set up the model and configure the view...</span>
|
|
window<span class="operator">.</span>setWindowTitle(
|
|
<span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>translate(<span class="string">"nestedlayouts"</span><span class="operator">,</span> <span class="string">"Nested layouts"</span>));
|
|
window<span class="operator">.</span>show();
|
|
<span class="keyword">return</span> app<span class="operator">.</span>exec();
|
|
}</pre>
|
|
</td><td ><img src="images/widgets-tutorial-nestedlayouts.png" alt="" /></td></tr>
|
|
</table>
|
|
</div><p>Note that we call the <tt>mainLayout</tt>'s <a href="qboxlayout.html#addLayout">addLayout()</a> function to insert the <tt>queryLayout</tt> above the <tt>resultView</tt> table.</p>
|
|
<p>We have omitted the code that sets up the model containing the data shown by the <a href="qtableview.html">QTableView</a> widget, <tt>resultView</tt>. For completeness, we show this below.</p>
|
|
<p>As well as <a href="qhboxlayout.html">QHBoxLayout</a> and <a href="qvboxlayout.html">QVBoxLayout</a>, Qt also provides <a href="qgridlayout.html">QGridLayout</a> and <a href="qformlayout.html">QFormLayout</a> classes to help with more complex user interfaces. These can be seen if you run <a href="designer-manual.html#qt-designer">Qt Designer</a>.</p>
|
|
<a name="setting-up-the-model"></a>
|
|
<h2>Setting up the Model</h2>
|
|
<p>In the code above, we did not show where the table's data came from because we wanted to concentrate on the use of layouts. Here, we see that the model holds a number of items corresponding to rows, each of which is set up to contain data for two columns.</p>
|
|
<pre class="cpp"> <span class="type"><a href="qstandarditemmodel.html">QStandardItemModel</a></span> model;
|
|
model<span class="operator">.</span>setHorizontalHeaderLabels(
|
|
<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>translate(<span class="string">"nestedlayouts"</span><span class="operator">,</span> <span class="string">"Name"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>translate(<span class="string">"nestedlayouts"</span><span class="operator">,</span> <span class="string">"Office"</span>));
|
|
|
|
<span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qstringlist.html">QStringList</a></span><span class="operator">></span> rows <span class="operator">=</span> <span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qstringlist.html">QStringList</a></span><span class="operator">></span>()
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Verne Nilsen"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"123"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Carlos Tang"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"77"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Bronwyn Hawcroft"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"119"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Alessandro Hanssen"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"32"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Andrew John Bakken"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"54"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Vanessa Weatherley"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"85"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Rebecca Dickens"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"17"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"David Bradley"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"42"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Knut Walters"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"25"</span>)
|
|
<span class="operator"><</span><span class="operator"><</span> (<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"Andrea Jones"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"34"</span>);
|
|
|
|
foreach (<span class="type"><a href="qstringlist.html">QStringList</a></span> row<span class="operator">,</span> rows) {
|
|
<span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qstandarditem.html">QStandardItem</a></span> <span class="operator">*</span><span class="operator">></span> items;
|
|
foreach (<span class="type"><a href="qstring.html">QString</a></span> text<span class="operator">,</span> row)
|
|
items<span class="operator">.</span>append(<span class="keyword">new</span> <span class="type"><a href="qstandarditem.html">QStandardItem</a></span>(text));
|
|
model<span class="operator">.</span>appendRow(items);
|
|
}
|
|
|
|
resultView<span class="operator">-</span><span class="operator">></span>setModel(<span class="operator">&</span>model);
|
|
resultView<span class="operator">-</span><span class="operator">></span>verticalHeader()<span class="operator">-</span><span class="operator">></span>hide();
|
|
resultView<span class="operator">-</span><span class="operator">></span>horizontalHeader()<span class="operator">-</span><span class="operator">></span>setStretchLastSection(<span class="keyword">true</span>);</pre>
|
|
<p>The use of models and views is covered in the <a href="examples-itemviews.html">Item Views Examples</a> and in the <a href="model-view-programming.html">Model/View Programming</a> overview.</p>
|
|
</div>
|
|
<!-- @@@tutorials/widgets/nestedlayouts -->
|
|
</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>
|