About Xceed Zip for x64

A High-performance, feature-rich ZIP/UNZIP component with AES encryption for the x86-64 architecture.

Xceed Zip for x64 offers Zip, unzip, updating, converting, disk and memory streaming and more functionality to your 64 bit applications. Xceed Zip for x64 is a fully self-contained object, written with ATL 3.0 for no external dependencies. Xceed Zip for x64(64bit) advanced capabilities include non-blocking methods for background operation, wildcards that work even for folder names, renaming files in a zip file without unzipping then rezipping, etc. A version for the IA-64 ( 64-bit) processor architecture is also available. Xceed Zip for x64 functionality also includes no 4GB or file limit (Zip64), Deflate64, BZip2/BWT, filtering, split/spanned/self-extracting zip files, and much more.

Xceed Zip for x64 Features

ActiveX technology

  • A single fully self-contained COM object and ActiveX control written with ATL 3.0.
  • Built for the x86-64 processor architecture. A version for the IA-64 processor architecture is also available.
  • Requires no external compression DLLs, MFC DLLs, or runtime libraries.
  • Both single-threaded (STA) and multi-threaded apartment (MTA) model design.
  • Instantiate the component dynamically without putting it on a form.
  • Supports multiple instances running simultaneously.
  • Supports both Unicode and ANSI in one single control. The library automatically uses Unicode API calls for best performance when running on Windows NT, 2000, and XP.
  • ActiveX control interface has all constants, enumerations, and types built-in. Code completion, property categories, help strings, and context-sensitive F1-help fully supported.
  • Works with all 32-bit development environments that can use ActiveX controls, including VB, VC++, Delphi, C++ Builder, VFP, Office, PB, VO, Web scripting languages, ASP, and DCOM projects.
  • Also compatible with VB.NET and C#. For developers that require 100% managed code, check out Xceed Zip for .NET, our fully object-oriented Zip, compression and FileSystem class library.

Compression & Zip file technology

  • Supports WinZip 9.0 (and up) compatible AES strong encryption.
  • Fast, low memory usage compression engine.
  • 100% compatible with the PKZIP 2.04g format.
  • 100% compatible with the PKZIP 4.5 format.
  • Supports the Zip64 zip file format allowing the creation of Zip files of practically unlimited size (no 4 GB limit).
  • Supports the BZip2 (BWT) compression method for 15% to 20% better compression than Deflate on many popular file types, especially XML data.
  • BZip2 compression method is excellent for compressing XML data.
  • Supports the Deflate64TM compression method, an industry standard improvement to regular Deflate.
  • Zip files can contain any number of files (no 65535 file limit).
  • Regular, spanned, and self-extracting zip files created by Xceed Zip can be used by any of today's existing unzipping applications, and vice-versa.
  • Stores and retrieves the latest zip file format extensions, allowing Unicode filenames and NT file attributes, extra time stamps, and security permissions to be stored in the zip file.
  • No need to repair corrupted zip files. Xceed Zip automatically tries to recover from errors and reports any inconsistencies found in the zip file while unzipping.

Major operations

  • Zip files or memory buffers into new or existing zip files.
  • Unzip files to disk or directly to memory.
  • Compress and decompress strings or buffers completely in memory.
  • All compression and decompression modes support streaming and encryption.
  • Create fully customizable self-extracting zip files (see section below for features)
  • Convert any type of zip file (regular, spanned, multi-part, self-extracting, or spanned self-extracting) into any other type of zip file.
  • Reads and writes zip files that span multiple disks.
  • Reads and writes multi-part zip files directly to hard drive.
  • Update one zip file from another one's contents or merge two zip files together.
  • Optional background processing so your code can continue execution while Xceed Zip is working.

Application-component interactivity

  • All operations can be aborted at any time.
  • Provides status report events on a file-by-file basis as well as on the entire operation being performed, with percentages, byte, and file counts. Easily add any kind of progress bar to your apps.
  • Events are triggered whenever a file is being zipped, unzipped, updated, deleted, etc.
  • Notifies your application when and why a specific file cannot be processed.
  • Notifies your application when a file being zipped or unzipped is about to overwrite an existing file. Your application can then choose to overwrite it or skip it. You can also rename files.
  • Provides complete file information for the file currently being processed.
  • Your application receives info such as a file's achieved compression ratio, compressed size, and other info as it becomes available.
  • Informs your application that it should prompt the user to insert a specific disk when reading or writing zip files that span multiple disks.
  • Many events have modifiable parameters to allow your application to change file parameters or specifications as the files are being zipped, unzipped, converted, etc.
  • Unused events can be prevented from being triggered for increased performance.
  • Provide feedback to the user when the temporary zip file is being copied to its final destination.
  • Provide feedback to the user when the zip file's central directory is being written.

Zip file manipulation functionality

  • Obtain global information on a zip file.
  • Obtain a detailed list of a zip file's contents via a collection object.
  • Obtain a detailed list of a zip file's contents via events.
  • Delete files from within a zip file.
  • Delete files after they have been successfully and verifiably zipped.
  • Test the integrity of a zip file and its contents.
  • Process or exclude files based on file attributes, sizes, version resources and dates, or create your own custom include/exclude filters.
  • Wildcard previewing: find out exactly which files will match your wildcards and filters before you start zipping or unzipping.
  • Compression previewing: obtain the compressed file sizes before starting the actual zipping operation. Statistics on the entire group of files to be zipped are also provided.
  • Add and retrieve comments for individual files in the zip file.
  • Get and set the global zip file comment.
  • Automatic full yield so other applications do not halt during processing.
  • Clear disks before writing the zip file to them.
  • Specify the amount of free space to leave on the first disk of a spanned zip file set.
  • Reject disks without specified amount of free space on them when spanning.
  • Compress entire directories and their contents.
  • Process only files newer than those already in the zip file or existing on disk.
  • Provide global encryption and decryption passwords or on a file-by-file basis.
  • Control which types of files are stored in the zip file without compression.
  • Control what path information is stored in the zip file for each file.
  • Store a drive's volume label in the zip file and restore it during unzipping.
  • Zip up system and hidden files, overwrite read-only files.
  • Allow zipping files that are currently open for write operations by other processes.
  • Limit operation to files with timestamps and file sizes within specified ranges.
  • Supports long filenames and UNC paths, and stores Unicode filenames in the zip file.
  • Manipulate self-extracting zip files without disturbing their self-extracting ability.
  • Rename files and their paths as they are being zipped or unzipped.
  • Rename files in a zip file without unzip and re-zip operations.
  • Change file parameters (comment, time stamps, file attributes) in a zip file.
  • Control the amount of compression applied to files being zipped.
  • Specify the path where files will be uncompressed to.
  • Specify files to process using wildcards.
  • Work on temporary copies of zip files, for maximum safety.
  • Specify the location of where temp files are created.
  • Filter out files during a zip file update, merge, or conversion based on any file attributes or parameters.
  • Set the date of the archive file to the most recent date among the files it contains.

Documentation and samples

  • Complete, comprehensive documentation provided in an MSDN-style HTML format which is fully context-sensitive so that pressing F1 on a keyword in your IDE opens up the manual to the correct relevant topic.
  • Fully commented sample applications for various languages, including VB, Delphi, Visual C++ with ATL and MFC, C++ Builder, and ASP Active Server Pages.

Direct DLL API access

  • The library's single DLL can also be accessed as a standard 32-bit DLL through its exported API.
  • All properties, methods, and events are exported.
  • All exported API calls involving string parameters come in single, wide character, and Unicode versions.
  • Events can be handled either by callback functions or by windows messages.

Self-extracting Zip file features

  • Create new self-extracting zip files or transform already existing zip files into self-extracting zip files.
  • Create self-extracting Zip files for the traditional PKZIP 2.04g compression method. Also now supports the Deflate64™, BZip2, and BWT methods (New in Xceed Zip for x64 V6.1).
  • Create self-extracting zip files that support AES encryption. (New in Xceed Zip for x64 V6.1)
  • Self-extracting zip files can span multiple disks.
  • Creates 32-bit self-extracting zip files that work on all Windows 95, 98, ME, NT, 2000, XP, and Vista operating systems or 16-bit self-extracting zip files that work on Windows 3.x as well.
  • Update and reconfigure an existing self-extracting zip file.
  • Customizable introduction message and dialog box titles.
  • Display a license agreement with configurable accept and refuse buttons.
  • Customize all other messages, prompts, and button captions.
  • Customize the self-extracting zip file's application icon.
  • Set the default unzipping folder.
  • Allow user to select an alternate unzipping folder.
  • Request a password whenever an encrypted file is encountered.
  • The user can enter the decryption password or skip the file if they don't have the password for the file.
  • Display a text file after successfully unzipping files.
  • Customizable overwrite behavior with dialog box offering the user various overwrite options.
  • Display unzipping status.
  • User interaction and dialogs can be selectively shut off for quiet operation
  • Execute one or more applications (optionally with parameters) or open documents after successfully unzipping files.
  • Copy one or more files from one location to another after unzipping.
  • Register DLLs (or other libraries) on the system after unzipping.
  • Add or change key values in the registry after unzipping.
  • Create self-extracting zip files with a built-in decryption password. This prevents users from using unzipping programs to unzip the files, and therefore forces users to view your custom introduction, license agreement, or warning messages
  • Create program groups and insert items into program groups.
  • Associate filename extensions with applications.
  • Allows 3rd-party install or setup programs (and their data files) to be unzipped into a temporary folder, executed, and then deleted upon completion.
  • Custom paths, filenames, strings, and prompts are parsed, allowing you to insert strings such as the current folder, windows and windows system directories, the temporary folder, and more.
  • Use extra headers such as Unicode filenames, extended filestamps, and security descriptors. (New in Xceed Zip for x64 V6.1)
  • Supports the Zip64 zip file format allowing the creation of Zip files of practically unlimited size (no more 4 GB limit), which can contain a practically unlimited number of archived files. (New in Xceed Zip for x64 V6.1)