mediaplayer.h Example File
demos/mediaplayer/mediaplayer.h

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 #ifndef MEDIALAYER_H
 #define MEDIAPLAYER_H

 #include <QtGui/QWidget>
 #include <QtGui/QApplication>
 #include <QtCore/QTimerEvent>
 #include <QtGui/QShowEvent>
 #include <QtGui/QIcon>
 #include <QtCore/QHash>

 #include <phonon>
 class QThread;
 class QPushButton;
 class QLabel;
 class QSlider;
 class QTextEdit;
 class QMenu;
 class Ui_settings;

 class MediaPlayer :
             public QWidget
 {
     Q_OBJECT
 public:
     MediaPlayer(const QString &);
 public slots:
     void openFile();
     void pause();
     void play();
     void rewind();
     void forward();
     void setVolume(int);
     void dragEnterEvent(QDragEnterEvent *e);
     void dragMoveEvent(QDragMoveEvent *e);
     void dropEvent(QDropEvent *e);
     void handleDrop(QDropEvent *e);
     void setFile(const QString &text);
     void initVideoWindow();
     void initSettingsDialog();
     void updateEffect();
     void updateInfo();
     void updateTime();
     void finished();
     void scaleChanged(QAction *);
     void aspectChanged(QAction *);
     void playPause();

 private slots:
     void setAspect(int);
     void setScale(int);
     void setSaturation(int);
     void setContrast(int);
     void setHue(int);
     void setBrightness(int);
     void stateChanged(Phonon::State newstate, Phonon::State oldstate);
     void effectChanged();
     void showSettingsDialog();
     void showContextMenu(const QPoint &);
     void bufferStatus(int percent);
     void openUrl();
     void configureEffect();

 private:
     QIcon playIcon;
     QIcon pauseIcon;
     QPixmap volumeIcon;
     QPixmap mutedIcon;
     QMenu *fileMenu;
     QPushButton *playButton;
     QPushButton *rewindButton;
     QPushButton *forwardButton;
     Phonon::SeekSlider *slider;
     QLabel *volumeLabel;
     QLabel *timeLabel;
     QLabel *progressLabel;
     QSlider *volume;
     QSlider *m_hueSlider;
     QSlider *m_satSlider;
     QSlider *m_contSlider;
     QLabel *info;
     long duration;
     QHash <QString, QWidget*> propertyControllers;
     Phonon::Effect *nextEffect;
     QDialog *settingsDialog;
     Ui_settings *ui;

     QWidget m_videoWindow;
     Phonon::MediaObject m_MediaObject;
     Phonon::AudioOutput m_AudioOutput;
     Phonon::VideoWidget *m_videoWidget;
     Phonon::Path m_audioOutputPath;
 };

 #endif //MEDIAPLAYER_H