text: #ifndef MAINWINDOW_H
  #define MAINWINDOW_H
  
  #include <QMainWindow>
  #include <QMenuBar>
  #include <QDialog>
  #include <QToolBar>
  #include <QAction>
  #include <QDebug>
  
  class MainWindow : public QMainWindow
  {
      Q_OBJECT
  public:
  	MainWindow(QWidget *parent=0);
  	~MainWindow();
  	
  private:
  	QAction *openAction; 
  
  private slots:
  	void open();
  
  };
  
  #endif
  