pango:cairo-show-glyph-string (cr font glyphs)

cr -- a cairo:context-t instance
font -- a pango:font object from a PangoCairo font map
glyphs -- a pango:glyph-string instance

Draws the glyphs in glyphs in the specified Cairo context. The origin of the glyphs, the left edge of the baseline, will be drawn at the current point of the Cairo context.