Re: Cursor drawing

[Stefan Monnier]

> This kind of drawing cannot be part of the display engine, since you
> want to draw over the text, and thus redisplay will overwrite portions
> of your arrows.

That's why I was suggesting a separate layer.

> And probably also remove those at the beginning of each redisplay
> cycle, to avoid leaving artifacts on screen when/if redisplay decides
> to scroll.

Another way to look at it is that scrolling the display's pixels can
only be used when both layers (the glyph-matrix and the overlay) were
moved together.


        Stefan