public void resize(Coord sz) {
IBox box;
int th;
if (cap == null) {
box = wbox;
th = 0;
} else {
box = topless;
th = Window.th;
}
sz = sz.add(box.bisz()).add(0, th).add(mrgn.mul(2));
this.sz = sz;
ctl = box.btloff().add(0, th);
csz = sz.sub(box.bisz()).sub(0, th);
atl = ctl.add(mrgn);
asz = csz.sub(mrgn.mul(2));
ac = new Coord();
// ac = tlo.add(wbox.btloff()).add(mrgn);
placetwdgs();
for (Widget ch = child; ch != null; ch = ch.next) ch.presize();
}
