[HarfBuzz] How to get hb_face_t and hb_font_t without Freetype?

[Eli Zaretskii]

> Date: Sat, 11 May 2019 22:44:49 +0300
> From: Eli Zaretskii <eliz at gnu.org>
> Cc: harfbuzz at lists.freedesktop.org
> 
> > From: Behdad Esfahbod <behdad at behdad.org>
> > Date: Sat, 11 May 2019 12:25:57 -0700
> > Cc: Jonathan Kew <jfkthame at gmail.com>, 
> > 	"harfbuzz at lists.freedesktop.org" <harfbuzz at lists.freedesktop.org>
> > 
> > you can even implement Windows-backed font-funcs.  Several projects
> > do that.  Say, look at Qt maybe? 
> 
> I looked at XeTeX, but it goes the Freetype way.  I'll look at Qt,
> thanks.

For the record: Qt seems to use GetFontData for individual OTF
tables.  See qwindowsfontdatabase.cpp in the Qt sources.