text: #ifndef SAMPLECODE_H
  #define SAMPLECODE_H
  
  #include <QObject>
  
  /// Collection of sample code in document. And make sure they are working correctly.
  
  class SampleCode : public QObject
  {
      Q_OBJECT
  public:
      explicit SampleCode(QObject *parent = nullptr);
  
  signals:
  
  private slots:
      void v0_4_release_note();
  
  };
  
  #endif // SAMPLECODE_H
  