DosQueryCp allows a process to query its current process code page and the prepared system code pages.

The process code page identifier previously set by DosSetProcessCp or inherited by the process is returned to the caller. An input list size of two bytes returns only the current process code page identifier. If no code pages have been prepared with the CODEPAGE command, a length of two and a current code page identifier value of zero are returned.

Note: If no CODEPAGE= statement exists in CONFIG.SYS, the operating system uses the first codepage that it finds in the COUNTRY.SYS file for that country.

The system code page identifiers are returned to the caller in the same order as they appear in the CODEPAGE command. The code page identifiers are returned in the following order:

• The current code page of the process (one of the system code pages).
  
• The primary (default) system code page.
  
• The secondary system code page, if specified.

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