pszOld (PSZ) - input

Address of the ASCIIZ path name of the source file, subdirectory, or character device.

Global file-name characters are not allowed.

pszNew (PSZ) - input

Address of the ASCIIZ path name of the target file, subdirectory, or character device.

Global file-name characters are not allowed.

option (ULONG) - input

ULONG bit flags that define how the DosCopy function is done.

Bit

Description
31-3
Reserved. These bits must be set to zero.
2
DCPY_FAILEAS (0x00000004) Discard the EAs if the source file contains EAs and the destination file system does not support EAs.
• Discard the EAs (extended attributes) if the destination file system does not support EAs.

• Fail the copy if the destination file system does not support EAs.
1
DCPY_APPEND (x00000002)
Append the source file to the target file's end of data.
• Replace the target file with the source file.
  
• Append the source file to the target file's end of data.

  This is ignored when copying a directory, or if the target file does not exist.

0
DCPY_EXISTING (0x00000001)
Existing Target File Disposition.
• Do not copy the source file to the target if the file name already exists within the target directory. If a single file is being copied and the target already exists, an error is returned.

• Copy the source file to the target even if the file name already exists within the target directory.
Bit flag DCPY_FAILEAS can be used in combination with bit flag DCPY_APPEND or DCPY_EXISTING.

ulrc (APIRET) - returns

Return Code.

DosCopy returns one of the following values:

• NO_ERROR 2
  ERROR_FILE_NOT_FOUND
  3
  ERROR_PATH_NOT_FOUND
  5
  ERROR_ACCESS_DENIED
  26
  ERROR_NOT_DOS_DISK
  32
  ERROR_SHARING_VIOLATION
  36
  ERROR_SHARING_BUFFER_EXCEEDED
  87
  ERROR_INVALID_PARAMETER
  108
  ERROR_DRIVE_LOCKED
  112
  ERROR_DISK_FULL
  206
  ERROR_FILENAME_EXCED_RANGE
  267
  ERROR_DIRECTORY
  282
  ERROR_EAS_NOT_SUPPORTED
  283
  ERROR_NEED_EAS_FOUND
  For a full list of error codes, see Errors.