<?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>addressbook.cpp Example File | Qt Widgets 5.12.6</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 5.12</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-tutorials-addressbook-part3-example.html">Part 3 - Navigating between Entries</a></td><td >addressbook.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.6 Reference Documentation</a></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">addressbook.cpp Example File</h1> <span class="subtitle">tutorials/addressbook/part3/addressbook.cpp</span> <!-- $$$tutorials/addressbook/part3/addressbook.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 <QtWidgets></span> <span class="preprocessor">#include "addressbook.h"</span> AddressBook<span class="operator">::</span>AddressBook(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qwidget.html">QWidget</a></span>(parent) { <span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>nameLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">"Name:"</span>)); nameLine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineedit.html">QLineEdit</a></span>; nameLine<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>); <span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>addressLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">"Address:"</span>)); addressText <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtextedit.html">QTextEdit</a></span>; addressText<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>); addButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Add"</span>)); addButton<span class="operator">-</span><span class="operator">></span>show(); submitButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Submit"</span>)); submitButton<span class="operator">-</span><span class="operator">></span>hide(); cancelButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Cancel"</span>)); cancelButton<span class="operator">-</span><span class="operator">></span>hide(); nextButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Next"</span>)); nextButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>); previousButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Previous"</span>)); previousButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>); connect(addButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(addContact())); connect(submitButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(submitContact())); connect(cancelButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(cancel())); connect(nextButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(next())); connect(previousButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(previous())); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>buttonLayout1 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>; buttonLayout1<span class="operator">-</span><span class="operator">></span>addWidget(addButton<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignTop); buttonLayout1<span class="operator">-</span><span class="operator">></span>addWidget(submitButton); buttonLayout1<span class="operator">-</span><span class="operator">></span>addWidget(cancelButton); buttonLayout1<span class="operator">-</span><span class="operator">></span>addStretch(); <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>buttonLayout2 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>; buttonLayout2<span class="operator">-</span><span class="operator">></span>addWidget(previousButton); buttonLayout2<span class="operator">-</span><span class="operator">></span>addWidget(nextButton); <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>; mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(nameLabel<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(nameLine<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(addressLabel<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignTop); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(addressText<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(buttonLayout1<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(buttonLayout2<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>); setLayout(mainLayout); setWindowTitle(tr(<span class="string">"Simple Address Book"</span>)); } <span class="type">void</span> AddressBook<span class="operator">::</span>addContact() { oldName <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text(); oldAddress <span class="operator">=</span> addressText<span class="operator">-</span><span class="operator">></span>toPlainText(); nameLine<span class="operator">-</span><span class="operator">></span>clear(); addressText<span class="operator">-</span><span class="operator">></span>clear(); nameLine<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">false</span>); nameLine<span class="operator">-</span><span class="operator">></span>setFocus(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>OtherFocusReason); addressText<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">false</span>); addButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>); nextButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>); previousButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>); submitButton<span class="operator">-</span><span class="operator">></span>show(); cancelButton<span class="operator">-</span><span class="operator">></span>show(); } <span class="type">void</span> AddressBook<span class="operator">::</span>submitContact() { <span class="type"><a href="../qtcore/qstring.html">QString</a></span> name <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text(); <span class="type"><a href="../qtcore/qstring.html">QString</a></span> address <span class="operator">=</span> addressText<span class="operator">-</span><span class="operator">></span>toPlainText(); <span class="keyword">if</span> (name<span class="operator">.</span>isEmpty() <span class="operator">|</span><span class="operator">|</span> address<span class="operator">.</span>isEmpty()) { <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Empty Field"</span>)<span class="operator">,</span> tr(<span class="string">"Please enter a name and address."</span>)); <span class="keyword">return</span>; } <span class="keyword">if</span> (<span class="operator">!</span>contacts<span class="operator">.</span>contains(name)) { contacts<span class="operator">.</span>insert(name<span class="operator">,</span> address); <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Add Successful"</span>)<span class="operator">,</span> tr(<span class="string">"\"%1\" has been added to your address book."</span>)<span class="operator">.</span>arg(name)); } <span class="keyword">else</span> { <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Add Unsuccessful"</span>)<span class="operator">,</span> tr(<span class="string">"Sorry, \"%1\" is already in your address book."</span>)<span class="operator">.</span>arg(name)); } <span class="keyword">if</span> (contacts<span class="operator">.</span>isEmpty()) { nameLine<span class="operator">-</span><span class="operator">></span>clear(); addressText<span class="operator">-</span><span class="operator">></span>clear(); } nameLine<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>); addressText<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>); addButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>); <span class="type">int</span> number <span class="operator">=</span> contacts<span class="operator">.</span>size(); nextButton<span class="operator">-</span><span class="operator">></span>setEnabled(number <span class="operator">></span> <span class="number">1</span>); previousButton<span class="operator">-</span><span class="operator">></span>setEnabled(number <span class="operator">></span> <span class="number">1</span>); submitButton<span class="operator">-</span><span class="operator">></span>hide(); cancelButton<span class="operator">-</span><span class="operator">></span>hide(); } <span class="type">void</span> AddressBook<span class="operator">::</span>cancel() { nameLine<span class="operator">-</span><span class="operator">></span>setText(oldName); addressText<span class="operator">-</span><span class="operator">></span>setText(oldAddress); <span class="keyword">if</span> (contacts<span class="operator">.</span>isEmpty()) { nameLine<span class="operator">-</span><span class="operator">></span>clear(); addressText<span class="operator">-</span><span class="operator">></span>clear(); } nameLine<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>); addressText<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>); addButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>); <span class="type">int</span> number <span class="operator">=</span> contacts<span class="operator">.</span>size(); nextButton<span class="operator">-</span><span class="operator">></span>setEnabled(number <span class="operator">></span> <span class="number">1</span>); previousButton<span class="operator">-</span><span class="operator">></span>setEnabled(number <span class="operator">></span> <span class="number">1</span>); submitButton<span class="operator">-</span><span class="operator">></span>hide(); cancelButton<span class="operator">-</span><span class="operator">></span>hide(); } <span class="type">void</span> AddressBook<span class="operator">::</span>next() { <span class="type"><a href="../qtcore/qstring.html">QString</a></span> name <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text(); <span class="type"><a href="../qtcore/qmap.html">QMap</a></span><span class="operator"><</span><span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">,</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">></span><span class="operator">::</span>iterator i <span class="operator">=</span> contacts<span class="operator">.</span>find(name); <span class="keyword">if</span> (i <span class="operator">!</span><span class="operator">=</span> contacts<span class="operator">.</span>end()) i<span class="operator">+</span><span class="operator">+</span>; <span class="keyword">if</span> (i <span class="operator">=</span><span class="operator">=</span> contacts<span class="operator">.</span>end()) i <span class="operator">=</span> contacts<span class="operator">.</span>begin(); nameLine<span class="operator">-</span><span class="operator">></span>setText(i<span class="operator">.</span>key()); addressText<span class="operator">-</span><span class="operator">></span>setText(i<span class="operator">.</span>value()); } <span class="type">void</span> AddressBook<span class="operator">::</span>previous() { <span class="type"><a href="../qtcore/qstring.html">QString</a></span> name <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text(); <span class="type"><a href="../qtcore/qmap.html">QMap</a></span><span class="operator"><</span><span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">,</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">></span><span class="operator">::</span>iterator i <span class="operator">=</span> contacts<span class="operator">.</span>find(name); <span class="keyword">if</span> (i <span class="operator">=</span><span class="operator">=</span> contacts<span class="operator">.</span>end()){ nameLine<span class="operator">-</span><span class="operator">></span>clear(); addressText<span class="operator">-</span><span class="operator">></span>clear(); <span class="keyword">return</span>; } <span class="keyword">if</span> (i <span class="operator">=</span><span class="operator">=</span> contacts<span class="operator">.</span>begin()) i <span class="operator">=</span> contacts<span class="operator">.</span>end(); i<span class="operator">-</span><span class="operator">-</span>; nameLine<span class="operator">-</span><span class="operator">></span>setText(i<span class="operator">.</span>key()); addressText<span class="operator">-</span><span class="operator">></span>setText(i<span class="operator">.</span>value()); } </pre> </div> <!-- @@@tutorials/addressbook/part3/addressbook.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 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>