Qt 4.8: settingsdialog.h Example File (demos/spectrum/app/settingsdialog.h)

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# settingsdialog.h Example File

demos/spectrum/app/settingsdialog.h

     /****************************************************************************
     **
     ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
     ** Contact: http://www.qt-project.org/legal
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** 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 Digia Plc and its Subsidiary(-ies) nor the names
     **     of its contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
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     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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     #ifndef SETTINGSDIALOG_H
     #define SETTINGSDIALOG_H

     #include "spectrum.h"
     #include <QDialog>
     #include <QtMultimedia/QAudioDeviceInfo>

     QT_FORWARD_DECLARE_CLASS(QComboBox)
     QT_FORWARD_DECLARE_CLASS(QCheckBox)
     QT_FORWARD_DECLARE_CLASS(QSlider)
     QT_FORWARD_DECLARE_CLASS(QSpinBox)
     QT_FORWARD_DECLARE_CLASS(QGridLayout)

     /**
      * Dialog used to control settings such as the audio input / output device
      * and the windowing function.
      */
     class SettingsDialog : public QDialog {
         Q_OBJECT
     public:
         SettingsDialog(const QList<QAudioDeviceInfo> &availableInputDevices,
                        const QList<QAudioDeviceInfo> &availableOutputDevices,
                        QWidget *parent = 0);
         ~SettingsDialog();

         WindowFunction windowFunction() const           { return m_windowFunction; }
         const QAudioDeviceInfo& inputDevice() const     { return m_inputDevice; }
         const QAudioDeviceInfo& outputDevice() const    { return m_outputDevice; }

     private slots:
         void windowFunctionChanged(int index);
         void inputDeviceChanged(int index);
         void outputDeviceChanged(int index);

     private:
         WindowFunction   m_windowFunction;
         QAudioDeviceInfo m_inputDevice;
         QAudioDeviceInfo m_outputDevice;

         QComboBox*      m_inputDeviceComboBox;
         QComboBox*      m_outputDeviceComboBox;

         QComboBox*      m_windowFunctionComboBox;

     };

     #endif // SETTINGSDIALOG_H