#ifndef MAINWINDOW_H#define MAINWINDOW_H#include <QMainWindow>class QAction;class QActionGroup;class QLabel;class QMenu;class QToolBar;class QWorkspace;class Editor;class MainWindow : public QMainWindow{    Q_OBJECTpublic:    MainWindow();public slots:    void newFile();    void openFile(const QString &fileName);protected:    void closeEvent(QCloseEvent *event);private slots:    void open();    void save();    void saveAs();    void cut();    void copy();    void paste();    void about();    void updateMenus();private:    void createActions();    void createMenus();    void createToolBars();    void createStatusBar();    Editor *createEditor();    Editor *activeEditor();    QWorkspace *workspace;    QLabel *readyLabel;    QWidgetList windows;    QMenu *fileMenu;    QMenu *editMenu;    QMenu *windowMenu;    QMenu *helpMenu;    QToolBar *fileToolBar;    QToolBar *editToolBar;    QActionGroup *windowActionGroup;    QAction *newAction;    QAction *openAction;    QAction *saveAction;    QAction *saveAsAction;    QAction *exitAction;    QAction *cutAction;    QAction *copyAction;    QAction *pasteAction;    QAction *closeAction;    QAction *closeAllAction;    QAction *tileAction;    QAction *cascadeAction;    QAction *nextAction;    QAction *previousAction;    QAction *separatorAction;    QAction *aboutAction;    QAction *aboutQtAction;};#endif