How to check if a font has a given character?

[Eduardo M KALINOWSKI <ekalin bol com br>]

    I want to check if the font I'm using (in a GtkTextView, if that
matters) contains some characters (specifically, the "line-drawing"
characters). How can I do that with Pango? The function
pango_fc_font_has_char() apparently does exactly what I want, however I
couldn't discover how to get a PangoFcFont *.

-- 
Character is what you are in the dark!
                -- Lord John Whorfin

Eduardo M KALINOWSKI
ekalin bol com br
http://move.to/hpkb