text: #ifndef QHEXDOCUMENT_H
  #define QHEXDOCUMENT_H
  
  #include <QWidget>
  
  class QHexDocument : public QWidget
  {
      Q_OBJECT
  public:
      explicit QHexDocument(QWidget *parent = nullptr);
  
  signals:
  
  public slots:
  };
  
  #endif // QHEXDOCUMENT_H