#include <FL/Fl.H>
#include <FL/Fl_Widget.H>
#include <FL/Fl_Window.H>
#include <FL/fl_draw.H>

class Fl_Monobjet : public Fl_Widget {
public:
	Fl_Monobjet(int, int, int, int, const char *);
	virtual int handle(int);
	virtual void draw();
	int actif, x1, y1, x2, y2;
};
	
Fl_Monobjet::Fl_Monobjet(int x, int y, int w, int h, const char *label) 
	: Fl_Widget(x, y, w, h, label) {
	actif = 0;
	x1 = w/4;
	x2 = x1 + w/2;
	y1 = h/4;
	y2 = y1 + h/2;
}

void Fl_Monobjet::draw() {
	if (actif) fl_color(255, 0, 0);
	else fl_color(0, 0, 255);
	fl_rectf(x1, y1, x2-x1, y2-y1);
}

int Fl_Monobjet::handle(int event) {
	int x, y;
	
	if (event==FL_PUSH) {
		x = Fl::event_x();
		y = Fl::event_y();
		if (x>=x1 && x<x2 && y>=y1 && y<y2) {
			actif ^= 1;
			damage(FL_DAMAGE_ALL);
			redraw();
		}
		return 1;
	}		
	return Fl_Widget::handle(event);
}

int main() {
	Fl_Window *win;
	Fl_Monobjet *obj;

	win = new Fl_Window(0, 0, 480, 360, "Win");
	win->begin();
	obj = new Fl_Monobjet(0, 0, win->w(), win->h(), "");	
	win->end();

	win->show();
	return Fl::run();
}