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# mainwindow.h Example File
demos/undo/mainwindow.h

     /****************************************************************************
     **
     ** Copyright (C) 2005-$THISYEAR$ $TROLLTECH$. All rights reserved.
     **
     ** This file is part of the $MODULE$ of the Qt Toolkit.
     **
     ** $TROLLTECH_DUAL_LICENSE$
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #ifndef MAINWINDOW_H
     #define MAINWINDOW_H

     #include <QMainWindow>
     #include "ui_mainwindow.h"

     class Document;

     class MainWindow : public QMainWindow, public Ui::MainWindow
     {
         Q_OBJECT

     public:
         MainWindow(QWidget *parent = 0);

         void addDocument(Document *doc);
         void removeDocument(Document *doc);
         void setCurrentDocument(Document *doc);
         Document *currentDocument() const;

     public slots:
         void openDocument();
         void saveDocument();
         void closeDocument();
         void newDocument();

         void addShape();
         void removeShape();
         void setShapeColor();

         void addSnowman();
         void addRobot();

         void about();
         void aboutQt();

     private slots:
         void updateActions();

     private:
         QUndoGroup *m_undoGroup;

         QString fixedWindowTitle(const Document *doc) const;
     };

     #endif // MAINWINDOW_H