Help / WLanguage / WLanguage functions / Standard functions / Archive management functions
  • Error codes
  • Special case of the .GZ extension
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WindowsLinuxPHPWEBDEV - Browser code
AndroidAndroid Widget iPhone/iPadIOS WidgetApple WatchMac CatalystUniversal Windows 10 App
Stored procedures
Opens an existing archive.
For the archives in "CAB" or "RAR" format, the archive is created if it does not exist.
The archive can be:
  • in WinZip or PKZip format (.ZIP extension).
  • in WINDEV format (.WDZ extension).
  • in Cabinet file format (.CAB extension).
  • in RAR format (.RAR extension).
  • in 7z format (.7z extension).
  • in TAR format (.TAR extension).
  • in TGZ format (.TGZ extension).
  • in TAR.GZ format (.TAR.GZ extension).
  • an executable (.EXE) corresponding to a .WDZ file changed into a self-extracting archive.
Reports and Queries
MyArchive is zipArchive
// Open an archive
ResOpenArchive = zipOpen(MyArchive, "C:\MyArchives\")
// Display an error message if the archive was not opened
IF ResOpenArchive <> 0 THEN
<Result> = zipOpen(<Archive> , <Archive path> [, <Opening mode>])
<Result>: Integer
  • 0 if the archive was opened,
  • An error code (value greater than 0) otherwise. For more details on these error codes, see the Remarks.
<Archive>: Character string or zipArchive variable
Name of the archive to be used.
This name can correspond to:
The archive is created if it does not exist (except for the "CAB" or "RAR" formats).
<Archive path>: Character string
Path and name of archive (up to 260 characters). The archive extension can be specified. If the archive extension is not specified, the default extension is .WDZ.
<Opening mode>: Optional constant (or combination of constants)
Archive opening mode:
zipCreateIfNotFoundCreates the archive if it does not exist
(not available for .CAB and .RAR files)
zipHeader64Allows you to create an archive larger than 4 GB on which zipChangePath can be used.
TAR or TGZ (TAR.GZ) archive: This constant is not available.
zipReadOpening in read-only
zipWriteOpening in read/write
(not available for .CAB and .RAR files)

The default opening mode is: zipCreateIfNotFound + zipWrite.

Error codes

The following error codes are returned:
  • 1: The path passed as parameter does not exist.
  • 2: Access denied: the user has no sufficient rights.
  • 3: The archive is corrupted.
  • 6: The files of the sub-archives are not arranged in order (when opening a multi-part archive).
The message corresponding to the error code is returned by zipMsgError. Reminder:

    Special case of the .GZ extension

    '.tar.gz' files generated by GitHub should not be confused with compressed '.gz' files.
    Content compressed in gzip format can be decompressed with Uncompress.
    Business / UI classification: Business Logic
    Component: wd280zip.dll
    Minimum version required
    • Version 9
    This page is also available for…
    Click [Add] to post a comment

    Last update: 06/12/2023

    Send a report | Local help