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# piecesmodel.h Example File
itemviews/puzzle/piecesmodel.h

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     #ifndef PIECESLIST_H
     #define PIECESLIST_H

     #include <QAbstractListModel>
     #include <QList>
     #include <QPixmap>
     #include <QPoint>
     #include <QStringList>

     class QMimeData;

     class PiecesModel : public QAbstractListModel
     {
         Q_OBJECT

     public:
         PiecesModel(QObject *parent = 0);

         QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
         Qt::ItemFlags flags(const QModelIndex &index) const;
         bool removeRows(int row, int count, const QModelIndex &parent);

         bool dropMimeData(const QMimeData *data, Qt::DropAction action,
                           int row, int column, const QModelIndex &parent);
         QMimeData *mimeData(const QModelIndexList &indexes) const;
         QStringList mimeTypes() const;
         int rowCount(const QModelIndex &parent) const;
         Qt::DropActions supportedDropActions() const;

         void addPiece(const QPixmap &pixmap, const QPoint &location);
         void addPieces(const QPixmap& pixmap);

     private:
         QList<QPoint> locations;
         QList<QPixmap> pixmaps;
     };

     #endif