• Welcome to Xceed Zip
  • Contents
  • Licensing for trial or registered use
  • 64-bit Processor Versions
  • Introduction
    • Features of Xceed Zip Compression Library
    • Features of the Xceed Zip Self-Extractor Module
    • Differences between v6.1 and v6.5
    • Differences between v6.0 and v6.1
    • Differences between v5.1 and v6.0
    • Differences between v5.0 and v5.1
    • Differences between v4.5 and v5.0
    • Differences between v4.2 and v4.5
    • Differences between v4.1 and v4.2
    • Differences between v3.5 and v4.1
  • Installing
    • Installation instructions for Visual Basic 4.0 (32-bit)
    • Installation instructions for Visual Basic 5.0
    • Installation instructions for Visual Basic 6.0
    • Installation instructions for Visual C++ 4.0 (MFC)
    • Installation instructions for Visual C++ 5.0 (MFC)
    • Installation instructions for Visual C++ 6.0 (MFC)
    • Installation instructions for Word 97 and Excel 97
    • Installation instructions for Access 97
    • Installation instructions for Visual FoxPro 5.0 and 6.0
    • Installation instructions for Delphi 3.0
    • Installation instructions for Delphi 4 to 7
    • Installation instructions for C++ Builder 3.0
    • Installation instructions for C++ Builder 4 to 6
    • Installation instructions for C#
    • Installation instructions for VB.NET
    • Installation instructions for other 32-bit development environments
  • Getting started quickly
    • Zipping files
    • Unzipping files
    • Listing the contents of a zip file (by event)
    • Listing the contents of a zip file (by collection)
    • Creating or unzipping a spanned zip file
    • Adding a progress bar
    • Creating a new self-extracting zip file
    • Converting a zip file into a self-extracting zip file
    • Zipping files from memory directly to a zip file
    • Unzipping files from a zip file directly to memory
    • Compression entirely in memory
  • Xceed Zip control reference
    • Brief introduction to the zip file format
    • Controlling how paths are stored in the zip file
    • Formless use of the control
    • Running multiple operations at the same time
    • Support for 64-bit values
    • Handling reparse points (symbolic links, hard links, junctions, volume mount points, etc)
    • Xceed Zip control methods
      • AddFilesToExclude method
      • AddFilesToProcess method
      • Convert method
      • License method
      • ListZipContents method
      • GetErrorDescription method
      • GetZipContents method
      • GetZipContentsEx method
      • GetZipFileInformation method
      • PreviewFiles method
      • RemoveFiles method
      • TestZipFile method
      • Unzip method
      • UpdateZipDate method
      • Zip method
    • Xceed Zip control properties
      • About the Filtering Properties
      • Abort property
      • BackgroundProcessing property
      • BasePath property
      • CompressionLevel property
      • CompressionMethod property
      • CurrentOperation property
      • DeleteZippedFiles property
      • EncryptionMethod property
      • EncryptionPassword property
      • EncryptionStrength property
      • EventsToTrigger property
      • ExcludedFileAttributes property
      • ExtraHeaders property
      • FilesToProcess property
      • FilesToExclude property
      • FirstDiskFreeSpace property
      • IgnoredExtraHeaders property
      • MinDateToProcess property
      • MaxDateToProcess property
      • MinDiskFreeSpace property
      • MinSizeToProcess property
      • MaxSizeToProcess property
      • PreservePaths property
      • ProcessSubfolders property
      • RequiredFileAttributes property
      • SfxBinaryModule property
      • SkipIfExisting property
      • SkipIfNotExisting property
      • SkipIfOlderDate property
      • SkipIfOlderVersion property
      • SpanMultipleDisks property
      • SplitSize property
      • SplitSize64 property
      • SplitSizeHigh property
      • TempFolder property
      • TextEncoding property
      • UnicodeUsagePolicy property
      • Use64BitEvents property
      • UseTempFile property
      • UnzipToFolder property
      • ZipFilename property
      • ZipOpenedFiles property
    • Xceed Zip control events
      • ConvertPreprocessingFile event
      • DeletingFile event
      • DiskNotEmpty event
      • FileStatus event
      • GlobalStatus event
      • InsertDisk event
      • InvalidPassword event
      • ListingFile event
      • PreviewingFile event
      • ProcessCompleted event
      • MovingTempFile event
      • MovingTempFileStatus event
      • QueryMemoryFile event
      • RemovingFile event
      • ReplacingFile event
      • SkippingFile event
      • TestingFile event
      • UnzippingMemoryFile event
      • UnzipPreprocessingFile event
      • Warning event
      • WritingZipContentsStatus event
      • ZipComment event
      • ZipContentsStatus event
      • ZippingMemoryFile event
      • ZipPreprocessingFile event
    • Xceed Zip control enumeration types
      • xcdCompressionLevel enumeration
      • xcdCompressionMethod enumeration
      • xcdContentsFormat enumeration
      • xcdCurrentOperation enumeration
      • xcdDiskSpanning enumeration
      • xcdEncryptionMethod enumeration
      • xcdError enumeration
      • xcdEvents enumeration
      • xcdExtraHeader enumeration
      • xcdFileAttributes enumeration
      • xcdNotEmptyAction enumeration
      • xcdSkippingReason enumeration
      • xcdTextEncoding enumeration
      • xcdUnicodeUsagePolicy enumeration
      • xcdUnzipDestination enumeration
      • xcdUpdateZipDateOptions enumeration
      • xcdValueType enumeration
      • xcdWarning enumeration
      • xcdMoveTempFileAction enumeration
    • Xceed Zip control error codes
      • xerBusy constant
      • xerCannotAccessArray constant
      • xerCannotUpdateAndSpan constant
      • xerCannotUpdateSpanned constant
      • xerCreateTempFile constant
      • xerDiskNotEmptyAbort constant
      • xerEmptyZipFile constant
      • xerEndOfZipFile constant
      • xerFilesSkipped constant
      • xerInsertDiskAbort constant
      • xerInternalError constant
      • xerInvalidArrayDimensions constant
      • xerInvalidArrayType constant
      • xerInvalidSfxProperty constant
      • xerMemory constant
      • xerMoveTempFile constant
      • xerNotAZipFile constant
      • xerNotLicensed constant
      • xerNothingToDo constant
      • xerOpenZipFile constant
      • xerProcessStarted constant
      • xerReadSfxBinary constant
      • xerReadZipFile constant
      • xerRemoveWithoutTemp constant
      • xerSeekInZipFile constant
      • xerSfxBinaryNotFound constant
      • xerSplitSizeTooSmall constant
      • xerSuccess constant
      • xerUninitializedArray constant
      • xerUninitializedString constant
      • xerUnsupportedDataType constant
      • xerUserAbort constant
      • xerWarnings
      • xerWriteTempZipFile constant
      • xerWriteZipFile constant
    • Xceed Zip control warnings
      • xwrAESVersion constant
      • xwrExtraHeaderSize constant
      • xwrFileAlreadyOpenWrite constant
      • xwrFileTimesSize constant
      • xwrFilenameTooLong constant
      • xwrHeadersDiffer constant
      • xwrIncompleteWrite constant
      • xwrInvalidCentralOffset constant
      • xwrInvalidDescriptorOffset constant
      • xwrInvalidFileCount constant
      • xwrInvalidLocalOffset constant
      • xwrInvalidSignature constant
      • xwrInvalidZip64EndHeaderOffset constant
      • xwrJunkInZip constant
      • xwrNoFilesMatched constant
      • xwrSecuritySize constant
      • xwrSecurityData constant
      • xwrSecurityGet constant
      • xwrSecurityNotSupported constant
      • xwrSecuritySet constant
      • xwrSecurityUnknownCompression constant
      • xwrSecurityVersion constant
      • xwrTimeStampFlags constant
      • xwrTimeStampSize constant
      • xwrUnicodeData constant
      • xwrUnicodeSize constant
      • xwrZip64ExtraHeaderSize constant
      • xwrZip64FormatNotSupported constant
    • Xceed Zip control skipping reasons
      • xsrIncluded constant
      • xsrFilesToExclude constant
      • xsrSkipExisting constant
      • xsrSkipNotExisting constant
      • xsrSkipOlderDate constant
      • xsrSkipOlderVersion constant
      • xsrRequiredAttributes constant
      • xsrExcludedAttributes constant
      • xsrMinDate constant
      • xsrMaxDate constant
      • xsrMinSize constant
      • xsrMaxSize constant
      • xsrSkipUser constant
      • xsrDuplicateFilenames constant
      • xsrSkipReplace constant
      • xsrUpdateWithoutTemp constant
      • xsrInvalidDiskNumber constant
      • xsrFolderWithSize constant
      • xsrWriteFile constant
      • xsrOpenFile constant
      • xsrReadFile constant
      • xsrMoveFile constant
      • xsrInvalidPassword constant
      • xsrInvalidCRC constant
      • xsrInvalidUncompSize constant
      • xsrCentralHeaderData constant
      • xsrLocalHeaderData constant
      • xsrDescriptorHeaderData constant
      • xsrCreateFolder constant
      • xsrAccessDenied constant
      • xsrCreateFile constant
      • xsrRenamedToExisting constant
      • xsrVolumeWithSize constant
      • xsrCannotSetVolumeLabel constant
      • xsrCentralHeaderNotFound constant
      • xsrUnzipDiskFull constant
      • xsrCompress constant
      • xsrUncompress constant
      • xsrNotLicensed constant
      • xsrEncryptionMethod constant
      • xsrCompressionMethod constant
      • xsrMemory constant
    • Xceed Zip control moving actions
      • xmaAutomatic constant
      • xmaManual constant
      • xmaAbort constant
    • Collection objects
      • XceedZipItem object
        • Filename property
        • FilenameOnDisk property
        • Comment property
        • Size property
        • SizeHigh property
        • CompressedSize property
        • CompressedSizeHigh property
        • CompressionRatio property
        • Attributes property
        • CRC property
        • LastModified property
        • LastAccessed property
        • Created property
        • CompressionMethod property
        • Encrypted property
        • DiskNumber property
        • Excluded property
        • ExcludedReason property
      • XceedZipItems object
        • Item property
        • Count property
  • Xceed Compression control reference
    • Xceed Compression control methods
      • CalculateCrc method
      • Compress method
      • GetErrorDescription method
      • License method
      • Uncompress method
    • Xceed Compression control properties
      • CompressionLevel property
      • CompressionMethod property
      • EncryptionPassword property
    • Xceed Compression control enumeration types
      • xcdCompressionError enumeration
      • xcdCompressionLevel enumeration
      • xcdCompressionMethod enumeration
    • Xceed Compression control error codes
      • xceBusy constant
      • xceChecksumFailed constant
      • xceCompression constant
      • xceDataRemaining constant
      • xceInitCompression constant
      • xceInvalidEncryption constant
      • xceInvalidPassword constant
      • xceNotLicensed constant
      • xceSessionOpened constant
      • xceSuccess constant
      • xceUnknownMethod constant
    • Xceed Compression Format
  • Self-Extractor Module reference
    • Macros for the self-extractor module properties
    • Self-Extractor Module methods
      • SfxAddExecuteAfter method
      • SfxAddExtensionToAssociate method
      • SfxAddFileToCopy method
      • SfxAddFileToRegister method
      • SfxAddRegistryKey method
      • SfxAddProgramGroupItem method
      • SfxClearButtons method
      • SfxClearMessages method
      • SfxClearStrings method
      • SfxLoadConfig method
      • SfxResetButtons method
      • SfxResetMessages method
      • SfxResetStrings method
      • SfxSaveConfig method
    • Self-Extractor Module properties
      • SfxButtons property
      • SfxBinaryModule property
      • SfxDefaultPassword property
      • SfxDefaultUnzipToFolder property
      • SfxExecuteAfter property
      • SfxExistingFileBehavior property
      • SfxExtensionsToAssociate property
      • SfxFilesToCopy property
      • SfxFilesToRegister property
      • SfxIconFilename property
      • SfxInstallMode property
      • SfxMessages property
      • SfxProgramGroup property
      • SfxProgramGroupItems property
      • SfxReadmeFile property
      • SfxRegistryKeys property
      • SfxStrings property
    • Self-Extractor Module enumeration types
      • xcdSfxButtons enumeration
      • xcdSfxExistingFileBehavior enumeration
      • xcdSfxMessages enumeration
      • xcdSfxStrings enumeration
    • Self-Extractor Module error codes
      • xcdWarningGeneral constant
      • xcdWarningFilesSkipped constant
      • xcdWarningEmptyZipFile constant
      • xcdErrorNoZipFile constant
      • xcdErrorZipStruct constant
      • xcdErrorMemory constant
      • xcdErrorNothingToDo constant
      • xcdErrorDiskFull constant
      • xcdErrorEOF constant
      • xcdErrorUserAbort constant
      • xcdErrorMultiDisk constant
      • xcdErrorWrongDisk constant
      • xcdErrorCantCreateDir constant
  • Direct DLL API
    • DLL API Initialization and Instantiation
    • DLL API Function list
    • DLL API Event list
    • DLL API Event handling by callback functions
    • DLL API Event handling by Windows messages
    • DLL API Exported Functions structure
    • DLL API enumerations
    • DLL API additional notes for VB
    • DLL API function reference
      • XceedZipInitDLL function
      • XceedZipShutdownDLL function
      • XzCreateXceedZip function
      • XzDestroyXceedZip function
      • XcCreateXceedCompression function
      • XcDestroyXceedCompression function
      • XzSetXceedZipCallback function
      • XzSetXceedZipWindow function
      • XzAlloc function
      • XzFree function
      • XziGetFirstItem function
      • XziGetNextItem function
      • XziDestroyXceedZipItems function
    • DLL API event parameter structure reference
      • xcdListingFileParams structure
      • xcdPreviewingFileParams structure
      • xcdInsertDiskParams structure
      • xcdZipPreprocessingFileParams structure
      • xcdUnzipPreprocessingFileParams structure
      • xcdSkippingFileParams structure
      • xcdRemovingFileParams structure
      • xcdTestingFileParams structure
      • xcdFileStatusParams structure
      • xcdGlobalStatusParams structure
      • xcdDiskNotEmptyParams structure
      • xcdProcessCompletedParams structure
      • xcdZipCommentParams structure
      • xcdQueryMemoryFileParams structure
      • xcdZippingMemoryFileParams structure
      • xcdUnzippingMemoryFileParams structure
      • xcdWarningParams structure
      • xcdInvalidPasswordParams structure
      • xcdReplacingFileParams structure
      • xcdZipContentsStatusParams structure
      • xcdDeletingFileParams structure
      • xcdConvertPreprocessingFileParams structure
      • xcdWritingZipContentsStatusParams structure
      • xcdMovingTempFileParams structure
      • xcdMovingTempFileStatusParams structure
  • Migrating from previous versions
    • FilesToProcess property migration
    • Other properties migration
    • Other properties (SFX) migration
    • Methods migration
    • Events migration
  • Example topics
    • AES Encryption example for VB
    • AES Encryption example for Delphi
    • BackgroundProcessing property example
    • BasePath property example
    • Compress method example for VB
    • Compress method example for VC++
    • Compress method example for Delphi
    • Convert method example for VB
    • Convert method example for Delphi
    • ExcludedFileAttributes property example
    • FilesToProcess property example
    • FilesToExclude property example
    • GetZipContents method example
    • Listing the contents of a zip file by collection (C# example)
    • Listing the contents of a zip file by collection (VB.NET example)
    • GetZipFileInformation method example for Delphi
    • GetZipFileInformation method example for VB
    • ListZipContents method and ListingFile event example for VB
    • ListZipContents method and ListingFile event example for Delphi
    • MinDateToProcess and MaxDateToProcess properties example
    • MinSizeToProcess and MaxSizeToProcess properties example
    • PreviewFiles method and PreviewingFile event example for VB
    • PreviewFiles method and PreviewingFile event example for Delphi
    • RemoveFiles method example for VB
    • RemoveFiles method example for Delphi
    • RequiredFileAttributes property example
    • SfxExtensionsToAssociate examples
    • TestZipFile method and TestingFile event example for VB
    • TestZipFile method and TestingFile event example for Delphi
    • Unzip method example for VB
    • Unzip method example for Delphi
    • Unzip method example for VC++
    • Unzipping files (C# example)
    • Unzipping files (VB.NET example)
    • VB type conversion from Long to Double
    • Zip method example for VB
    • Zip method example for Delphi
    • Zip method example for VC++
    • Zipping files (C# example)
    • Zipping files (VB.NET example)
    • XceedZipItems object example for VB
    • XceedZipItems object example for Delphi
    • XceedZipItems object example for VC++
  • Sample applications
    • ASP
      • Getting Started Sample Application for ASP
    • C++ Builder
      • DLL API Sample for C++ Builder 4-6
      • Getting Started Sample Application for C++ Builder 4-6
      • Memory Compression Sample Application for C++ Builder 4-6
      • Zip Manager Sample Application for C++ Builder 4-6
      • Zipping memory to zip file sample application for C++ Builder 4-6
    • Delphi
      • DLL API Sample for Delphi 4 to 7
      • Delphi Console Sample Application
      • Delphi DLL Registration Sample Application
      • Getting Started Sample Application for Delphi 4 to 7
      • Memory Compression Sample Application for Delphi
      • Stream Compression Sample Application for Delphi
    • Visual Basic
      • DLL API Sample for Visual Basic
      • Getting Started Sample Application for Visual Basic 6
      • Memory Compression Sample Application for Visual Basic 6
      • Zip Manager 64 Sample Application for Visual Basic 6
      • Zip Manager Sample Application for Visual Basic 6
    • Visual Basic .NET
      • Getting Started Sample Application for VB.NET
    • Visual C++
      • DLL API Sample for Generic Ansi C++
      • Formless Sample Application for Visual C++ MFC
      • Getting Started Sample Application for Visual C++ ATL
      • Getting Started Sample App for Visual C++ MFC
      • Memory Compression Sample Application for Visual C++ ATL
    • Visual C#
      • Getting Started Sample Application for C#
    • Visual FoxPro
      • Getting Started Sample Application for Visual FoxPro 6
  • Deploying
    • Redistributable files
    • About the ActiveX component
    • About the Self-Extractor binaries
    • When using the DLL API
  • Legal information
    • Xceed Software License Agreement
    • Acknowledgments
  • Contact and product information
    • Contact Information
    • How To Order
    • Technical Support
  • Glossary topics
    • Absolute paths
    • AES
    • BWT
    • CRC
    • Current directory
    • Deflate
    • Deflate64
    • Event handler
    • Relative paths
    • Spanned zip files
    • Multi-part zip files
    • Streaming
    • Wildcards
    • Zip64