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movieplayer.h Example File
widgets/movie/movieplayer.h

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 #ifndef MOVIEPLAYER_H
 #define MOVIEPLAYER_H

 #include <QWidget>

 class QCheckBox;
 class QGridLayout;
 class QHBoxLayout;
 class QLabel;
 class QMovie;
 class QSlider;
 class QSpinBox;
 class QToolButton;
 class QVBoxLayout;

 class MoviePlayer : public QWidget
 {
     Q_OBJECT

 public:
     MoviePlayer(QWidget *parent = 0);
     void openFile(const QString &fileName);

 private slots:
     void open();
     void goToFrame(int frame);
     void fitToWindow();
     void updateButtons();
     void updateFrameSlider();

 private:
     void createControls();
     void createButtons();

     QString currentMovieDirectory;
     QLabel *movieLabel;
     QMovie *movie;
     QToolButton *openButton;
     QToolButton *playButton;
     QToolButton *pauseButton;
     QToolButton *stopButton;
     QToolButton *quitButton;
     QCheckBox *fitCheckBox;
     QSlider *frameSlider;
     QSpinBox *speedSpinBox;
     QLabel *frameLabel;
     QLabel *speedLabel;

     QGridLayout *controlsLayout;
     QHBoxLayout *buttonsLayout;
     QVBoxLayout *mainLayout;
 };

 #endif