pango:cairo-show-glyph-item (cr text item)

cr -- a cairo:context-t instance
text -- a string with the UTF-8 text that item refers to
item -- a pango:glyph-item instance

Draws the glyphs in item in the specified Cairo context, embedding the text associated with the glyphs in the output if the output format supports it, for example PDF, otherwise it acts similar to the pango:cairo-show-glyph-string function.

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