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mainwindow.h Example File
^{mainwindows/mdi/mainwindow.h}

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    ** This file is part of the documentation of the Qt Toolkit.
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    #ifndef MAINWINDOW_H
    #define MAINWINDOW_H

    #include <QMainWindow>

    class QAction;
    class QMenu;
    class QWorkspace;
    class MdiChild;
    class QSignalMapper;

    class MainWindow : public QMainWindow
    {
        Q_OBJECT

    public:
        MainWindow();

    protected:
        void closeEvent(QCloseEvent *event);

    private slots:
        void newFile();
        void open();
        void save();
        void saveAs();
        void cut();
        void copy();
        void paste();
        void about();
        void updateMenus();
        void updateWindowMenu();
        MdiChild *createMdiChild();

    private:
        void createActions();
        void createMenus();
        void createToolBars();
        void createStatusBar();
        void readSettings();
        void writeSettings();
        MdiChild *activeMdiChild();
        MdiChild *findMdiChild(const QString &fileName);

        QWorkspace *workspace;
        QSignalMapper *windowMapper;

        QMenu *fileMenu;
        QMenu *editMenu;
        QMenu *windowMenu;
        QMenu *helpMenu;
        QToolBar *fileToolBar;
        QToolBar *editToolBar;
        QAction *newAct;
        QAction *openAct;
        QAction *saveAct;
        QAction *saveAsAct;
        QAction *exitAct;
        QAction *cutAct;
        QAction *copyAct;
        QAction *pasteAct;
        QAction *closeAct;
        QAction *closeAllAct;
        QAction *tileAct;
        QAction *cascadeAct;
        QAction *arrangeAct;
        QAction *nextAct;
        QAction *previousAct;
        QAction *separatorAct;
        QAction *aboutAct;
        QAction *aboutQtAct;
    };

    #endif