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imagemodel.h Example File
itemviews/pixelator/imagemodel.h

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 #ifndef IMAGEMODEL_H
 #define IMAGEMODEL_H

 #include <QAbstractTableModel>
 #include <QImage>

 class ImageModel : public QAbstractTableModel
 {
     Q_OBJECT

 public:
     ImageModel(QObject *parent = 0);

     void setImage(const QImage &image);

     int rowCount(const QModelIndex &parent = QModelIndex()) const;
     int columnCount(const QModelIndex &parent = QModelIndex()) const;

     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
     QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;

 private:
     QImage modelImage;
 };

 #endif