Type Definition harfbuzz_sys::hb_font_get_font_extents_func_t

type hb_font_get_font_extents_func_t = Option<unsafe extern "C" fn(font: *mut hb_font_t, font_data: *mut c_void, extents: *mut hb_font_extents_t, user_data: *mut c_void) -> hb_bool_t>;