pub fn next_scroll<R>(
ui: &mut Ui,
area: ScrollArea,
add: impl FnOnce(&mut Ui) -> R,
) -> ScrollAreaOutput<R>Expand description
Show area NeXT-style: the bar always there, its trough TROUGH,
with scroller_chrome on top (one line = one interact row).
egui paints the trough with extreme_bg_color, which is WHITE for text
edits, so it is swapped for the scroller only and restored for add.