pub unsafe extern "C" fn FT_Get_SubGlyph_Info(
    glyph: FT_GlyphSlot,
    sub_index: FT_UInt,
    p_index: *mut FT_Int,
    p_flags: *mut FT_UInt,
    p_arg1: *mut FT_Int,
    p_arg2: *mut FT_Int,
    p_transform: *mut FT_Matrix
) -> FT_Error