ACCESS - QB64 Wiki

ACCESS

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The ACCESS clause is used in a networking OPEN statement. DOS 3.1 or above only!


Syntax:

OPEN "file.dat" FOR APPEND [ACCESS {READ|WRITE}] AS #1

Description:


Valid Options:

  • Default: When specified, all other processes are denied file access.
  • READ: When specified, read access is denied to other file procedures.
  • WRITE: When specified, write access is denied to other file procedures.
  • READ WRITE: When specified any access is denied to other file procedures.


Limitations:

  • Requires that the DOS SHARED.EXE program be run for QBasic to use networking access modes.
  • If another process already has access to a specified file, program access is denied for that file OPEN access. A "Permission Denied" error 70 will be returned. A network program must be able to handle a denial of access error.


See also:



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