<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>multipagewidget.cpp Example File | Qt Designer Manual</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtdesigner-manual.html">Qt Designer Manual</a></td><td ><a href="qtdesigner-containerextension-example.html">Container Extension Example</a></td><td >multipagewidget.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">multipagewidget.cpp Example File</h1> <span class="subtitle">containerextension/multipagewidget.cpp</span> <!-- $$$containerextension/multipagewidget.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include <QComboBox></span> <span class="preprocessor">#include <QVBoxLayout></span> <span class="preprocessor">#include <QStackedWidget></span> <span class="preprocessor">#include "multipagewidget.h"</span> MultiPageWidget<span class="operator">::</span>MultiPageWidget(<span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QWidget</span>(parent) <span class="operator">,</span> stackWidget(<span class="keyword">new</span> <span class="type">QStackedWidget</span>) <span class="operator">,</span> comboBox(<span class="keyword">new</span> <span class="type">QComboBox</span>) { comboBox<span class="operator">-</span><span class="operator">></span>setObjectName(<span class="type">QStringLiteral</span>(<span class="string">"__qt__passive_comboBox"</span>)); connect(comboBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QComboBox</span><span class="operator">::</span>activated)<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MultiPageWidget<span class="operator">::</span>setCurrentIndex); <span class="type">QVBoxLayout</span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVBoxLayout</span>(<span class="keyword">this</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(comboBox); layout<span class="operator">-</span><span class="operator">></span>addWidget(stackWidget); } <span class="type">QSize</span> MultiPageWidget<span class="operator">::</span>sizeHint() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type">QSize</span>(<span class="number">200</span><span class="operator">,</span> <span class="number">150</span>); } <span class="type">void</span> MultiPageWidget<span class="operator">::</span>addPage(<span class="type">QWidget</span> <span class="operator">*</span>page) { insertPage(count()<span class="operator">,</span> page); } <span class="type">void</span> MultiPageWidget<span class="operator">::</span>removePage(<span class="type">int</span> index) { <span class="type">QWidget</span> <span class="operator">*</span>widget <span class="operator">=</span> stackWidget<span class="operator">-</span><span class="operator">></span>widget(index); stackWidget<span class="operator">-</span><span class="operator">></span>removeWidget(widget); comboBox<span class="operator">-</span><span class="operator">></span>removeItem(index); } <span class="type">int</span> MultiPageWidget<span class="operator">::</span>count() <span class="keyword">const</span> { <span class="keyword">return</span> stackWidget<span class="operator">-</span><span class="operator">></span>count(); } <span class="type">int</span> MultiPageWidget<span class="operator">::</span>currentIndex() <span class="keyword">const</span> { <span class="keyword">return</span> stackWidget<span class="operator">-</span><span class="operator">></span>currentIndex(); } <span class="type">void</span> MultiPageWidget<span class="operator">::</span>insertPage(<span class="type">int</span> index<span class="operator">,</span> <span class="type">QWidget</span> <span class="operator">*</span>page) { page<span class="operator">-</span><span class="operator">></span>setParent(stackWidget); stackWidget<span class="operator">-</span><span class="operator">></span>insertWidget(index<span class="operator">,</span> page); <span class="type">QString</span> title <span class="operator">=</span> page<span class="operator">-</span><span class="operator">></span>windowTitle(); <span class="keyword">if</span> (title<span class="operator">.</span>isEmpty()) { title <span class="operator">=</span> tr(<span class="string">"Page %1"</span>)<span class="operator">.</span>arg(comboBox<span class="operator">-</span><span class="operator">></span>count() <span class="operator">+</span> <span class="number">1</span>); page<span class="operator">-</span><span class="operator">></span>setWindowTitle(title); } connect(page<span class="operator">,</span> <span class="operator">&</span><span class="type">QWidget</span><span class="operator">::</span>windowTitleChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MultiPageWidget<span class="operator">::</span>pageWindowTitleChanged); comboBox<span class="operator">-</span><span class="operator">></span>insertItem(index<span class="operator">,</span> title); } <span class="type">void</span> MultiPageWidget<span class="operator">::</span>setCurrentIndex(<span class="type">int</span> index) { <span class="keyword">if</span> (index <span class="operator">!</span><span class="operator">=</span> currentIndex()) { stackWidget<span class="operator">-</span><span class="operator">></span>setCurrentIndex(index); comboBox<span class="operator">-</span><span class="operator">></span>setCurrentIndex(index); <span class="keyword">emit</span> currentIndexChanged(index); } } <span class="type">void</span> MultiPageWidget<span class="operator">::</span>pageWindowTitleChanged() { <span class="type">QWidget</span> <span class="operator">*</span>page <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type">QWidget</span> <span class="operator">*</span><span class="operator">></span>(sender()); <span class="keyword">const</span> <span class="type">int</span> index <span class="operator">=</span> stackWidget<span class="operator">-</span><span class="operator">></span>indexOf(page); comboBox<span class="operator">-</span><span class="operator">></span>setItemText(index<span class="operator">,</span> page<span class="operator">-</span><span class="operator">></span>windowTitle()); } <span class="type">QWidget</span><span class="operator">*</span> MultiPageWidget<span class="operator">::</span>widget(<span class="type">int</span> index) { <span class="keyword">return</span> stackWidget<span class="operator">-</span><span class="operator">></span>widget(index); } <span class="type">QString</span> MultiPageWidget<span class="operator">::</span>pageTitle() <span class="keyword">const</span> { <span class="keyword">if</span> (<span class="keyword">const</span> <span class="type">QWidget</span> <span class="operator">*</span>currentWidget <span class="operator">=</span> stackWidget<span class="operator">-</span><span class="operator">></span>currentWidget()) <span class="keyword">return</span> currentWidget<span class="operator">-</span><span class="operator">></span>windowTitle(); <span class="keyword">return</span> <span class="type">QString</span>(); } <span class="type">void</span> MultiPageWidget<span class="operator">::</span>setPageTitle(<span class="type">QString</span> <span class="keyword">const</span> <span class="operator">&</span>newTitle) { <span class="keyword">if</span> (<span class="type">QWidget</span> <span class="operator">*</span>currentWidget <span class="operator">=</span> stackWidget<span class="operator">-</span><span class="operator">></span>currentWidget()) currentWidget<span class="operator">-</span><span class="operator">></span>setWindowTitle(newTitle); <span class="keyword">emit</span> pageTitleChanged(newTitle); } </pre> </div> <!-- @@@containerextension/multipagewidget.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> 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.<br> 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. </p> </div> </body> </html>