#include <QtGui/qspinbox.h>
#ifndef QSPINBOX_H
#ifndef QT_NO_SPINBOX
class QDoubleSpinBox: public QAbstractSpinBox{
   /* Some contents are skipped to improve readability */
   public: void setRange(double min, double max);
   /* ... */
};
#endif // QT_NO_SPINBOX
#endif // QSPINBOX_H