<?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>settingsdialog.cpp Example File | Qt Multimedia 5.12.2</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="qtmultimedia-index.html">Qt Multimedia</a></td><td ><a href="qtmultimedia-multimedia-spectrum-example.html">Spectrum Example</a></td><td >settingsdialog.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtmultimedia-index.html">Qt 5.12.2 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">settingsdialog.cpp Example File</h1> <span class="subtitle">multimedia/spectrum/app/settingsdialog.cpp</span> <!-- $$$multimedia/spectrum/app/settingsdialog.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2017 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 "settingsdialog.h"</span> <span class="preprocessor">#include <QCheckBox></span> <span class="preprocessor">#include <QComboBox></span> <span class="preprocessor">#include <QDialogButtonBox></span> <span class="preprocessor">#include <QLabel></span> <span class="preprocessor">#include <QPushButton></span> <span class="preprocessor">#include <QSlider></span> <span class="preprocessor">#include <QSpinBox></span> <span class="preprocessor">#include <QVBoxLayout></span> SettingsDialog<span class="operator">::</span>SettingsDialog( <span class="keyword">const</span> <span class="type">QList</span><span class="operator"><</span><span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">></span> <span class="operator">&</span>availableInputDevices<span class="operator">,</span> <span class="keyword">const</span> <span class="type">QList</span><span class="operator"><</span><span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">></span> <span class="operator">&</span>availableOutputDevices<span class="operator">,</span> <span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QDialog</span>(parent) <span class="operator">,</span> m_windowFunction(DefaultWindowFunction) <span class="operator">,</span> m_inputDeviceComboBox(<span class="keyword">new</span> <span class="type">QComboBox</span>(<span class="keyword">this</span>)) <span class="operator">,</span> m_outputDeviceComboBox(<span class="keyword">new</span> <span class="type">QComboBox</span>(<span class="keyword">this</span>)) <span class="operator">,</span> m_windowFunctionComboBox(<span class="keyword">new</span> <span class="type">QComboBox</span>(<span class="keyword">this</span>)) { <span class="type">QVBoxLayout</span> <span class="operator">*</span>dialogLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVBoxLayout</span>(<span class="keyword">this</span>); <span class="comment">// Populate combo boxes</span> <span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span> device; foreach (device<span class="operator">,</span> availableInputDevices) m_inputDeviceComboBox<span class="operator">-</span><span class="operator">></span>addItem(device<span class="operator">.</span>deviceName()<span class="operator">,</span> <span class="type">QVariant</span><span class="operator">::</span>fromValue(device)); foreach (device<span class="operator">,</span> availableOutputDevices) m_outputDeviceComboBox<span class="operator">-</span><span class="operator">></span>addItem(device<span class="operator">.</span>deviceName()<span class="operator">,</span> <span class="type">QVariant</span><span class="operator">::</span>fromValue(device)); m_windowFunctionComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"None"</span>)<span class="operator">,</span> <span class="type">QVariant</span><span class="operator">::</span>fromValue(<span class="type">int</span>(NoWindow))); m_windowFunctionComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Hann"</span><span class="operator">,</span> <span class="type">QVariant</span><span class="operator">::</span>fromValue(<span class="type">int</span>(HannWindow))); m_windowFunctionComboBox<span class="operator">-</span><span class="operator">></span>setCurrentIndex(m_windowFunction); <span class="comment">// Initialize default devices</span> <span class="keyword">if</span> (<span class="operator">!</span>availableInputDevices<span class="operator">.</span>empty()) m_inputDevice <span class="operator">=</span> availableInputDevices<span class="operator">.</span>front(); <span class="keyword">if</span> (<span class="operator">!</span>availableOutputDevices<span class="operator">.</span>empty()) m_outputDevice <span class="operator">=</span> availableOutputDevices<span class="operator">.</span>front(); <span class="comment">// Add widgets to layout</span> <span class="type">QScopedPointer</span><span class="operator"><</span><span class="type">QHBoxLayout</span><span class="operator">></span> inputDeviceLayout(<span class="keyword">new</span> <span class="type">QHBoxLayout</span>); <span class="type">QLabel</span> <span class="operator">*</span>inputDeviceLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Input device"</span>)<span class="operator">,</span> <span class="keyword">this</span>); inputDeviceLayout<span class="operator">-</span><span class="operator">></span>addWidget(inputDeviceLabel); inputDeviceLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_inputDeviceComboBox); dialogLayout<span class="operator">-</span><span class="operator">></span>addLayout(inputDeviceLayout<span class="operator">.</span>data()); inputDeviceLayout<span class="operator">.</span>take(); <span class="comment">// ownership transferred to dialogLayout</span> <span class="type">QScopedPointer</span><span class="operator"><</span><span class="type">QHBoxLayout</span><span class="operator">></span> outputDeviceLayout(<span class="keyword">new</span> <span class="type">QHBoxLayout</span>); <span class="type">QLabel</span> <span class="operator">*</span>outputDeviceLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Output device"</span>)<span class="operator">,</span> <span class="keyword">this</span>); outputDeviceLayout<span class="operator">-</span><span class="operator">></span>addWidget(outputDeviceLabel); outputDeviceLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_outputDeviceComboBox); dialogLayout<span class="operator">-</span><span class="operator">></span>addLayout(outputDeviceLayout<span class="operator">.</span>data()); outputDeviceLayout<span class="operator">.</span>take(); <span class="comment">// ownership transferred to dialogLayout</span> <span class="type">QScopedPointer</span><span class="operator"><</span><span class="type">QHBoxLayout</span><span class="operator">></span> windowFunctionLayout(<span class="keyword">new</span> <span class="type">QHBoxLayout</span>); <span class="type">QLabel</span> <span class="operator">*</span>windowFunctionLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Window function"</span>)<span class="operator">,</span> <span class="keyword">this</span>); windowFunctionLayout<span class="operator">-</span><span class="operator">></span>addWidget(windowFunctionLabel); windowFunctionLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_windowFunctionComboBox); dialogLayout<span class="operator">-</span><span class="operator">></span>addLayout(windowFunctionLayout<span class="operator">.</span>data()); windowFunctionLayout<span class="operator">.</span>take(); <span class="comment">// ownership transferred to dialogLayout</span> <span class="comment">// Connect</span> connect(m_inputDeviceComboBox<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>SettingsDialog<span class="operator">::</span>inputDeviceChanged); connect(m_outputDeviceComboBox<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>SettingsDialog<span class="operator">::</span>outputDeviceChanged); connect(m_windowFunctionComboBox<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>SettingsDialog<span class="operator">::</span>windowFunctionChanged); <span class="comment">// Add standard buttons to layout</span> <span class="type">QDialogButtonBox</span> <span class="operator">*</span>buttonBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDialogButtonBox</span>(<span class="keyword">this</span>); buttonBox<span class="operator">-</span><span class="operator">></span>setStandardButtons(<span class="type">QDialogButtonBox</span><span class="operator">::</span>Ok <span class="operator">|</span> <span class="type">QDialogButtonBox</span><span class="operator">::</span>Cancel); dialogLayout<span class="operator">-</span><span class="operator">></span>addWidget(buttonBox); <span class="comment">// Connect standard buttons</span> connect(buttonBox<span class="operator">-</span><span class="operator">></span>button(<span class="type">QDialogButtonBox</span><span class="operator">::</span>Ok)<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>SettingsDialog<span class="operator">::</span>accept); connect(buttonBox<span class="operator">-</span><span class="operator">></span>button(<span class="type">QDialogButtonBox</span><span class="operator">::</span>Cancel)<span class="operator">,</span> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>SettingsDialog<span class="operator">::</span>reject); setLayout(dialogLayout); } SettingsDialog<span class="operator">::</span><span class="operator">~</span>SettingsDialog() { } <span class="type">void</span> SettingsDialog<span class="operator">::</span>windowFunctionChanged(<span class="type">int</span> index) { m_windowFunction <span class="operator">=</span> <span class="keyword">static_cast</span><span class="operator"><</span>WindowFunction<span class="operator">></span>( m_windowFunctionComboBox<span class="operator">-</span><span class="operator">></span>itemData(index)<span class="operator">.</span>value<span class="operator"><</span><span class="type">int</span><span class="operator">></span>()); } <span class="type">void</span> SettingsDialog<span class="operator">::</span>inputDeviceChanged(<span class="type">int</span> index) { m_inputDevice <span class="operator">=</span> m_inputDeviceComboBox<span class="operator">-</span><span class="operator">></span>itemData(index)<span class="operator">.</span>value<span class="operator"><</span><span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">></span>(); } <span class="type">void</span> SettingsDialog<span class="operator">::</span>outputDeviceChanged(<span class="type">int</span> index) { m_outputDevice <span class="operator">=</span> m_outputDeviceComboBox<span class="operator">-</span><span class="operator">></span>itemData(index)<span class="operator">.</span>value<span class="operator"><</span><span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">></span>(); } </pre> </div> <!-- @@@multimedia/spectrum/app/settingsdialog.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>