enum PageSize { A4, B5, Letter, Legal, Executive,
A0, A1, A2, A3, A5, A6, A7, A8, A9, B0, B1,
B10, B2, B3, B4, B6, B7, B8, B9, C5E, Comm10E,
DLE, Folio, Ledger, Tabloid, Custom, NPageSize = Custom, NPaperSize = Custom };
typedef PageSize PaperSize;
程序中怎么将这些枚举值以字符串的形式打印在label上?