Re: master 2f31dbeadf: Also show mouse DND tooltip contents during interprogram drag-and-drop

[Po Lu <luangruo@yahoo.com>]

Eli Zaretskii <eliz@gnu.org> writes:

> Instead of recording tooltip's coordinates in static C variables
> (which then could cause potential problems with stale values),
> wouldn't it be better to just move the tip frame from Lisp when the
> mouse moves?

We don't record the tooltip coordinates in a C variable, just the last
values of `dx' and `dy' passed to `x-show-tip'.  They are used to make
sure the tooltip moves to the location relative to the mouse pointer
specified by the caller of `x-show-tip'.

As for moving the tooltip from Lisp, that isn't possible, since we don't
allow running Lisp code inside the drag-and-drop event loop except under
very specific circumstances (i.e. the mouse moving onto one of our own
frames, or inside a selection converter).