Function pango_sys::pango_glyph_string_extents_range

pub unsafe extern fn pango_glyph_string_extents_range(glyphs: *mut PangoGlyphString,
                                                      start: c_int,
                                                      end: c_int,
                                                      font: *mut PangoFont,
                                                      ink_rect: *mut PangoRectangle,
                                                      logical_rect: *mut PangoRectangle)