/*
 *  Key Downs
 *  ---------
 *  This example shows how to handle keyboard events from
 *  the user. It creates a window with a drawing area on it
 *  which can be used to catch the keyboard events, and it
 *  displays those chars on the drawing area.
 */

#include <graphapp.h>
#include <ctype.h>

point location = {0,0};

void key_down(drawing d, int key)
{
	char letter[2];
	int width;

	if (! isprint(key))
		return;
	sprintf(letter, "%c", key);
	width = strwidth(FixedFont, letter);
	if (location.x + width > getwidth(d)) {
		location.x = 0;
		location.y += getheight(FixedFont);
	}
	setfont(FixedFont);
	drawstr(location, letter);
	location.x += width;
}

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

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

	setkeydown(d, key_down);

	show(w);
	mainloop();
}