# move all associated items... $c->move($group, $dx, $dy); # consider moving the visible area in the scrollregion my @corners = $c->get_corners(); my @bb = $c->bbox($group); if ($bb[0] < $corners[0]) { $c->xviewScroll(-1, 'units'); } if ($bb[1] < $corners[1]) { $c->yviewScroll(-1, 'units'); } if ($bb[2] >= $corners[2]) { $c->xviewScroll(+1, 'units'); } if ($bb[3] >= $corners[3]) { $c->yviewScroll(+1, 'units'); }