#include "Distribution_displayer.h" namespace CGAL { class Qt_widget; } struct Qt_widget_displayer : public Distribution_displayer { Qt_widget_displayer(CGAL::Qt_widget* widget); void fill_rectangle(double x1, double y1, double x2, double y2, CGAL::Color c); void segment(double x1, double y1, double x2, double y2, CGAL::Color c); private: CGAL::Qt_widget* widget; };