#include <QtGui/qmessagebox.h> #ifndef QMESSAGEBOX_H #ifndef QT_NO_MESSAGEBOX class QMessageBox: public QDialog{ /* Some contents are skipped to improve readability */ #ifndef QT_NO_TEXTEDIT public: class QString detailedText() const #endif /* ... */ }; #endif // QT_NO_MESSAGEBOX #endif // QMESSAGEBOX_H