#include <QtGui/qtreewidget.h>
#ifndef QTREEWIDGET_H
#ifndef QT_NO_TREEWIDGET
class QTreeWidget: public QTreeView{
   /* Some contents are skipped to improve readability */
   public: void setItemExpanded(QTreeWidgetItem* item, bool expand);
   /* ... */
};
#endif // QT_NO_TREEWIDGET
#endif // QTREEWIDGET_H