/*
 *  Dots
 *  ----
 *  A program to draw different coloured dots on a window, using the
 *  mouse buttons to control colour. Try using the mouse to draw in
 *  the drawing area, and use different mouse buttons to select
 *  different colours.
 */

#include <graphapp.h>

void mouse_click(drawing d, int buttons, point p)
{
	if (buttons & LeftButton)
		setcolour(Red);
	else if (buttons & MiddleButton)
		setcolour(Green);
	else if (buttons & RightButton)
		setcolour(Blue);

	drawpoint(p);
}

void main(void)
{
	window w;
	drawing d;

	w = newwindow("Dots", rect(50,50,200,200), StandardWindow);
	d = newdrawing(rect(10,10,180,180), NULL);
	setbackground(w, LightGrey);

	setmousedown(d, mouse_click);
	setmousedrag(d, mouse_click);

	show(w);
	mainloop();
}