pango-layout-index-to-pos (layout index)

layout -- a pango-layout object
index -- an integer with the byte index within layout

A pango-rectangle instance with the position of the grapheme.

Converts from an index within a Pango layout to the onscreen position corresponding to the grapheme at that index, which is represented as rectangle. Note that pos->x is always the leading edge of the grapheme and pos->x + pos->width the trailing edge of the grapheme. If the directionality of the grapheme is right-to-left, then pos->width will be negative.