DosMkDir

This call creates a subdirectory.

DosMkDir (DirName, Reserved)

• DirName (PSZ) - input : Address of the ASCIIZ directory path name, which may or may not include a drive specification. If no drive is specified, the current drive is assumed. DosQSysInfo is called by an application during initialization to determine the maximum path length allowed by OS.

• Reserved (ULONG) - input : Reserved and must be set to zero.

rc (USHORT) - return

Return code descriptions are:

• 0 NO_ERROR
• 3 ERROR_PATH_NOT_FOUND
• 5 ERROR_ACCESS_DENIED
• 26 ERROR_NOT_DOS_DISK
• 87 ERROR_INVALID_PARAMETER
• 108 ERROR_DRIVE_LOCKED
• 206 ERROR_FILENAME_EXCED_RANGE

If any subdirectory names in the path do not exist, the subdirectory is not created. Upon return, a subdirectory is created at the end of the specified path.

DosQSysInfo must be used by an application to determine the maximum path length supported by OS. The returned value should be used to dynamically allocate buffers that are to be used to store paths.

If a program running with the NEWFILES bit set tries to create a directory with blanks immediately preceding the dot on a FAT drive, the system rejects the name. For example, if c: is a FAT drive, the name “file .txt” is rejected and the name “file.txt” is accepted.

  #define INCL_DOSFILEMGR
 
  USHORT  rc = DosMkDir(DirName, Reserved);
 
  PSZ              DirName;       /* New directory string name */
  ULONG            0;             /* Reserved (must be zero) */
 
  USHORT           rc;            /* return code */

  EXTRN  DosMkDir:FAR
  INCL_DOSFILEMGR     EQU 1
 
  PUSH@  ASCIIZ  DirName       ;New directory name string
  PUSH   DWORD   0             ;Reserved (must be zero)
  CALL   DosMkDir

Returns WORD

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