#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