Unlock Instruction


Unlock StreamNum


Unlock StreamNum, RecordNum


Unlock StreamNum, [start] To end

Group: File

Form 1: Unlock all of StreamNum.

Form 2: Unlock a record (or byte) of StreamNum.

Form 3: Unlock a range of records (or bytes) of StreamNum. If start is omitted then unlock starting at the first record (or byte).

Note: For sequential files (Input, Output and Append) unlock always affects the entire file.

Parameter Description

StreamNum Streams 1 through 255 are private to each macro. Streams 256 through 511 are shared by all macros.

RecordNum For Random mode files this is the record number. The first record is 1. Otherwise, it is the byte position. The first byte is 1.

start First record (or byte) in the range.

end Last record (or byte) in the range.

See Also: Lock, Open.


Sub Main
  Dim V As Variant
  Open "SAVE_V.DAT" For Binary As #1
  Lock #1
  Get #1, 1, V
  V = "Hello"
  Put #1, 1, V
  Unlock #1
  Close #1