pub type cairo_user_scaled_font_text_to_glyphs_func_t = Option<unsafe extern "C" fn(scaled_font: *mut cairo_scaled_font_t, utf8: *const c_char, utf8_len: c_int, glyphs: *mut *mut cairo_glyph_t, num_glyphs: *mut c_int, clusters: *mut *mut cairo_text_cluster_t, num_clusters: *mut c_int, cluster_flags: *mut cairo_text_cluster_flags_t) -> cairo_status_t>;
enum cairo_user_scaled_font_text_to_glyphs_func_t {
None,
Some(unsafe extern "C" fn(_: *mut cairo_scaled_font_t, _: *const i8, _: i32, _: *mut *mut cairo_glyph_t, _: *mut i32, _: *mut *mut cairo_text_cluster_t, _: *mut i32, _: *mut i32) -> i32),
}