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pixeldelegate.h Example File
itemviews/pixelator/pixeldelegate.h

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    #ifndef PIXELDELEGATE_H
    #define PIXELDELEGATE_H

    #include <QAbstractItemDelegate>
    #include <QFontMetrics>
    #include <QModelIndex>
    #include <QSize>

    class QAbstractItemModel;
    class QObject;
    class QPainter;

    static const int ItemSize = 256;
    static const int PixelSize = 12;

    class PixelDelegate : public QAbstractItemDelegate
    {
        Q_OBJECT

    public:
        PixelDelegate(QObject *parent = 0)
            : QAbstractItemDelegate(parent) {}

        void paint(QPainter *painter, const QStyleOptionViewItem &option,
                   const QModelIndex &index) const;

        QSize sizeHint(const QStyleOptionViewItem &option,
                       const QModelIndex &index ) const;
    };

    #endif


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Qt 4.0.1