#include suicidal virtual class QCheckBox : virtual QButton { QCheckBox(QWidget *, const char * = 0); QCheckBox(const QString &, QWidget *, const char * = 0); bool isChecked() const; void setChecked(bool); void setNoChange(); void setTristate(bool = TRUE); virtual QSize sizeHint() const; virtual QSizePolicy sizePolicy() const; protected: virtual void drawButton(QPainter *); virtual void drawButtonLabel(QPainter *); virtual void resizeEvent(QResizeEvent *); virtual void updateMask(); } Qt::CheckBox;