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High-performance, feature-rich ZIP/UNZIP component with AES encryption and Self-extracting |
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Current version: 6.5 |
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Platform: ActiveX / COM / DLL |
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Price: $399.95 royalty-free | | |
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| ActiveX technology |
- A single fully self-contained COM object and ActiveX control written with ATL 3.0.
- 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 rugnning 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.
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| 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.
- The only library to provide WinZip 12 compatibility, supporting the LZMA algorithm for improved compression in certain situations. Note: Zip files using WinZip 12’s special JPEG recompression feature are not supported.
- UTF-8 character encoding in headers for improved support of international characters in filenames and comments is provided.
- 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.
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| 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.
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| 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.
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| 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.
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| 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.
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| 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.
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| Self-extracting Zip file features |
- Create new self-extracting zip files or transform already existing zip files into self-extracting zip files.
- Self-extracting zip files can span multiple disks.
- Create self-extracting Zip files for the traditional PKZIP 2.04g compression method. Also now supports the Deflate64™, BZip2, and BWT methods (New in v6.1).
- Create self-extracting zip files that support AES encryption. (New in v6.1)
- 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 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 v6.1)
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