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Date: Thu, 13 Dec 2018 12:23:21 +0100
From: cinap_lenrek@felloff.net
To: 9front@9front.org
Subject: Re: [9front] !#&%&^#*@ RIO!!!
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X-Glyph: ➈
X-Bullshit: webscale GPU interface 

huh? rio doesnt use event library. it uses mouse(2) instead, which gives
you a Mousectl* that contains a channel. the "mouse" variable of
type Mouse* points into that mousectl which caches the most recent mouse
data read from the channel. it gets updated by readmouse() which is
in libdraw.

here:

int
readmouse(Mousectl *mc)
{
	if(mc->image){
		Display *d = mc->image->display;
		if(d->bufp > d->buf)
			flushimage(d, 1);
	}
	if(recv(mc->c, &mc->Mouse) < 0){
		fprint(2, "readmouse: %r\n");
		return -1;
	}
	return 0;
}

note that mouse == &mc->Mouse because:

	mousectl = initmouse(nil, screen);
	if(mousectl == nil)
		error("can't find mouse");
	mouse = mousectl;

--
cinap