#include <QtGui/qundogroup.h> #ifndef QUNDOGROUP_H #ifndef QT_NO_UNDOGROUP class QUndoGroup: public QObject{ /* Some contents are skipped to improve readability */ private: QUndoGroup(class QUndoGroup const &); /* ... */ }; #endif // QT_NO_UNDOGROUP #endif // QUNDOGROUP_H