Eli Zaretskii <eliz@gnu.org> writes:

[...]

> This cannot be a compile-time condition, because Emacs compiled with X
> support can still have TTY frames.  So you need to test for
> FRAME_WINDOW_P, and only call x_y_to_hpos_vpos if FRAME_WINDOW_P
> returns non-zero; otherwise call pixel_to_glyph_coords even in a build
> where HAVE_WINDOW_SYSTEM is defined.

Ok.  Sorry about that.  Here is a new one.