You can design your application programs for
processing double-byte data in the same way you design application programs
for processing alphanumeric data, with some additional considerations.
- Identify double-byte data used in the database files, if any.
- Design display and printer formats that can be used with double-byte data.
- If needed, provide double-byte conversion as a means of entering data
for interactive applications. Use the DDS keyword for double-byte conversion
(IGCCNV) to specify DBCS conversion in display files.
- Write double-byte error messages to be displayed by the program.
- Specify extension character processing so that the system prints and displays
all double-byte data.
- Determine which double-byte characters, if any, must be defined.