[ CCode ( cname = "cairo_user_scaled_font_text_to_glyphs_func_t" , has_target = false ) ]
public delegate Status UserScaledFontTextToGlyphsFunc (UserScaledFont scaled_font, string utf8, int utf8_len, out Glyph[] glyphs, out TextCluster[] clusters, out TextClusterFlags cluster_flags)