Constants
| FX_OK | = | 0 |
| FX_EOF | = | 1 |
| FX_NO_SUCH_FILE | = | 2 |
| FX_PERMISSION_DENIED | = | 3 |
| FX_FAILURE | = | 4 |
| FX_BAD_MESSAGE | = | 5 |
| FX_NO_CONNECTION | = | 6 |
| FX_CONNECTION_LOST | = | 7 |
| FX_OP_UNSUPPORTED | = | 8 |
| FX_INVALID_HANDLE | = | 9 |
| FX_NO_SUCH_PATH | = | 10 |
| FX_FILE_ALREADY_EXISTS | = | 11 |
| FX_WRITE_PROTECT | = | 12 |
| FX_NO_MEDIA | = | 13 |
| FX_NO_SPACE_ON_FILESYSTEM | = | 14 |
| FX_QUOTA_EXCEEDED | = | 15 |
| FX_UNKNOWN_PRINCIPLE | = | 16 |
| FX_LOCK_CONFlICT | = | 17 |
| FX_DIR_NOT_EMPTY | = | 18 |
| FX_NOT_A_DIRECTORY | = | 19 |
| FX_INVALID_FILENAME | = | 20 |
| FX_LINK_LOOP | = | 21 |