#include suicidal virtual class QCheckBox : virtual QButton { QCheckBox(QWidget * = 0, const char * = 0); QCheckBox(const char *, QWidget *, const char * = 0); bool isChecked() const; void setChecked(bool); virtual QSize sizeHint() const; protected: virtual void drawButton(QPainter *); virtual void drawButtonLabel(QPainter *); } Qt::CheckBox;