Access

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Access

Limits a Binary or Random file in Open to reading, writing, or both.

Syntax

Open filename for Binary Access {Read | Write | Read Write} as [#]filenum

Description

Access is used with the Open statement to request read, write, or read and write privileges. If the Access clause is not specified, Read Write is assumed.

Remarks

Usage

open filename for binary Access Read as #filenum

open filename for binary Access Write as #filenum

open filename for binary Access Read Write as #filenum

Differences from QB

• None known.

See also

• Open
• Read
• Write

Examples

This example shows how to open the file "data.raw" with Read and then "data.out" with Write access, in Binary mode, in an open file number returned by FreeFile.

Dim As Long o

  '' get an open file number.

  o = FreeFile

  '' open file for read-only access.

  Open "data.raw" For Binary Access Read As #o

    '' make a buffer in memory thats the entire size of the file

    Dim As UByte file_char( LOF( o ) - 1 )

      '' get the file into the buffer.

      Get #o, , file_char()

  Close

  '' get another open file number.

  o = FreeFile

  '' open file for write-only access.

  Open "data.out" For Binary Access Write As #o

    '' put the buffer into the new file.

    Put #o, , file_char()

  Close

  Print "Copied file ""data.raw"" to file ""data.out"""

  Sleep

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Category: File I/O Functions
Kind: keyword

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Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.