text: #ifndef FILELOADER_H
  #define FILELOADER_H
  
  #include<QMainWindow>
  
  QT_BEGIN_NAMESPACE
  class QFile;
  class QFileDialog;
  class QString;
  class QMediaPlayer;
  QT_END_NAMESPACE
  
  class FileLoader : public QMainWindow
  {
      Q_OBJECT
  public:
      FileLoader();
  
  private:
      bool loadFile(QString& fileName);
  
  public slots:
      void sl_open_file();
  
  signals:
      void sg_opened_mpg_file(QString& fileName);
  };
  
  #endif // FILELOADER_H
  