#include <QtGui/qsortfilterproxymodel.h>
#ifndef QSORTFILTERPROXYMODEL_H
#ifndef QT_NO_SORTFILTERPROXYMODEL
class QSortFilterProxyModel: public QAbstractProxyModel{
   /* Some contents are skipped to improve readability */
   private: inline struct QSortFilterProxyModelPrivate* d_func();
   /* ... */
};
#endif // QT_NO_SORTFILTERPROXYMODEL
#endif // QSORTFILTERPROXYMODEL_H