cb (ULONG) - input

The length, in bytes, of the string of binary values to be case-mapped.

pcc (PCOUNTRYCODE) - input

Pointer to the COUNTRYCODE structure in which the country code and code page are identified.

If country is set to 0, the case map table for the default system country code is used.

If codepage is set to 0, the case map table for the current process code page of the caller is used.

Refer to the COUNTRYCODE for a table of values for country code and code page identifier.

pch (PCHAR) - in/out

The string of binary characters to be case-mapped.

They are case-mapped in place, and they replace the input, so the results appear in pch.

ulrc (APIRET) - returns

Return Code.

DosMapCase returns one of the following values:

• NO_ERROR 397
  ERROR_NLS_OPEN_FAILED
  398
  ERROR_NLS_NO_CTRY_CODE
  401
  ERROR_NLS_TYPE_NOT_FOUND
  476
  ERROR_CODE_PAGE_NOT_FOUND
  For a full list of error codes, see Errors.