Deprecated 2.0.0Since 0.9.2Deprecatedufuncs: unicode_funcs_ta Unicode-function structure
Deprecatedfunc: unicode_eastasian_width_func_tThe callback function to assign
OptionalDeprecateddestroy: destroy_func_tThe function to call when user_data is not needed anymore
Sets the implementation function for HarfBuzz.unicode_eastasian_width_func_t.