[Fontconfig] xft/fontconfig question

[Dmitry Karasik]

Hello,

Is it possible to access the font glyph data? The only function
I found is XftGlyphExtents, which is undocumented and
XGlyphInfo parameters' names are uninformative.
I need to read the parameters like subscript/superscript position,
underline position/thickness, inter-line interval etc etc. I am sure
these are present deep down in libfreetype's guts, but how would I 
access them in a portable way?

I would also appreciate the documentation to Xft, if there is something
more extensive than 'man 3 Xft' .

Thanks,
   Dmitry Karasik