Function harfbuzz::RUST_hb_font_funcs_set_glyph_v_advance_func

pub unsafe extern "C" fn RUST_hb_font_funcs_set_glyph_v_advance_func(
    ffuncs: *mut hb_font_funcs_t, 
    func: hb_font_get_glyph_v_advance_func_t, 
    user_data: *mut c_void, 
    destroy: hb_destroy_func_t
)