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# mainwindow.h Example File
phonon/musicplayer/mainwindow.h

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     #ifndef MAINWINDOW_H
     #define MAINWINDOW_H

     #include <QMainWindow>
     #include <Phonon/AudioOutput>
     #include <Phonon/SeekSlider>
     #include <Phonon/MediaObject>
     #include <Phonon/VolumeSlider>
     #include <Phonon/BackendCapabilities>
     #include <QList>

     class QAction;
     class QTableWidget;
     class QLCDNumber;

     class MainWindow : public QMainWindow
     {
         Q_OBJECT

     public:
         MainWindow();

         QSize sizeHint() const {
             return QSize(500, 300);
         }

     private slots:
         void addFiles();
         void about();
         void stateChanged(Phonon::State newState, Phonon::State oldState);
         void tick(qint64 time);
         void sourceChanged(const Phonon::MediaSource &source);
         void metaStateChanged(Phonon::State newState, Phonon::State oldState);
         void aboutToFinish();
         void tableClicked(int row, int column);

     private:
         void setupActions();
         void setupMenus();
         void setupUi();

         Phonon::SeekSlider *seekSlider;
         Phonon::MediaObject *mediaObject;
         Phonon::MediaObject *metaInformationResolver;
         Phonon::AudioOutput *audioOutput;
         Phonon::VolumeSlider *volumeSlider;
         QList<Phonon::MediaSource> sources;

         QAction *playAction;
         QAction *pauseAction;
         QAction *stopAction;
         QAction *nextAction;
         QAction *previousAction;
         QAction *addFilesAction;
         QAction *exitAction;
         QAction *aboutAction;
         QAction *aboutQtAction;
         QLCDNumber *timeLcd;
         QTableWidget *musicTable;
     };

     #endif