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imageviewer.h Example File
widgets/imageviewer/imageviewer.h

 /****************************************************************************
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 ** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved.
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 ** This file is part of the example classes of the Qt Toolkit.
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 ** contained therein.  Please consult your licensing agreement or
 ** contact sales@trolltech.com if any conditions of this licensing
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 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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 #ifndef IMAGEVIEWER_H
 #define IMAGEVIEWER_H

 #include <QMainWindow>
 #include <QPrinter>

 class QAction;
 class QLabel;
 class QMenu;
 class QScrollArea;
 class QScrollBar;

 class ImageViewer : public QMainWindow
 {
     Q_OBJECT

 public:
     ImageViewer();

 private slots:
     void open();
     void print();
     void zoomIn();
     void zoomOut();
     void normalSize();
     void fitToWindow();
     void about();

 private:
     void createActions();
     void createMenus();
     void updateActions();
     void scaleImage(double factor);
     void adjustScrollBar(QScrollBar *scrollBar, double factor);

     QLabel *imageLabel;
     QScrollArea *scrollArea;
     double scaleFactor;

     QPrinter printer;

     QAction *openAct;
     QAction *printAct;
     QAction *exitAct;
     QAction *zoomInAct;
     QAction *zoomOutAct;
     QAction *normalSizeAct;
     QAction *fitToWindowAct;
     QAction *aboutAct;
     QAction *aboutQtAct;

     QMenu *fileMenu;
     QMenu *viewMenu;
     QMenu *helpMenu;
 };

 #endif


Copyright © 2008 Trolltech Trademarks
Qt 4.3.5