Overview

The VCLZip Delphi component allows you to add ZIP and UNZIP capabilites to your application. This component is different from most other "ZIP" development libraries in that it is written in 100% Delphi Object Pascal code and is full featured. There are no DLL's to tote around. This component links right into your application's executable. It is very easy to use. Just SOME of the features include:

Create zip files fully compatable with PKZip
Completely native Delphi VCL (NO DLLS)
Create Disk Spanning and Blocked zip files
Delphi 4, 5, 6, 7, 2005, 2006, 2007 and 2009 compatible
C++ Builder 4, 5 6, 2007, and 2009 compatible
Zip directly from streams to zip files
Unzip directly to streams from zip files
Stream to Stream zipping and unzipping
Unzip directly to memory buffers
Zip directoy from memory buffers
Create and read Zip and File Comments
Create Self Extracting Zip Files (16 bit and 32 bit distributable
Windows sfx stubs included (source included for these too) or use your own stubs)
Complete support for encrypted files (encrypts as it zips)
Save Relative Path information
Unzip using Relative Paths (even if zip file wasn't created with relative path info)
Use enhanced wildcards
Exclude List (tell VCLZip which files not to include (use wildcards too))
NoCompress (STORE) List (tell VCLZip which files to just store (use wildcards too)
Set your own temp directory
Plenty of events
Long filenames, even the 16 bit VCLZip/VCLUnZip
Includes comprehensive Zip Utility with source as demo
Includes a small stream zipping demo
Includes a context sensitive help file
Use Unicode filenames, archive names, and pathnames (except for Delphi/BCB 4 and5) .
No Royalties!
AES Strong Encryption
Zip64 capabilities, properties, methods and events:
Uncompressed, Compressed, and Archive file sizes can be up to 2^63-1 bytes in length.
You can compress up to 2147483647 files into an archive. This is compatible with PKZip's Zip64 format.
If a file does not extend beyond any of the original limitations (filesizes of 4 gig or 65535 files) then no Zip64 format information is included in the archive.
property isZip64 - tells you when you are working with a zip file that is using Zip64 format.
Faster processing due to linking to Zlib 1.2.3 object files for compression and decompression routines.
Blocked Zip Files (spanned zip archives split onto hard drive)
Compatible with PKZip and WinZip split archives file naming format.
For backwards compatability you can tell VCLZip to use the old VCLZip filenaming format by using the BlockMode property.

VCLZip constists of two components. TVCLUnZip which handles all of the viewing and unzipping responsibilities and TVCLZip which descends from TVCLUnZip and adds all of the zipping features.

If your application requires both zip and unzip capabilities, just drop TVCLZip onto your application's form. If all your application needs is unzipping capabilities then all you will need is the TVCLUnZip component. You should never need both components at the same time for most purposes.

VCLZip fully supports Spanned Disk Zip Files as well as Blocked Zip Files.

All versions support long filenames completely.

Registering VCLZip will get you all of the source code which works for all supported versions of Delphi and BCB. The unregistered version will only work while the Delphi/BCB IDE is running.

** Please test the component out completely to your satisfaction before registering to be sure that it meets your requirements. I do not guarantee that it is completely free from bugs. This component has been well tested, but certainly not under all conditions.

Included in this installation is a fully functional component. When you register you will receive instructions for where to download a new installation containing all of the source code. Once you install the components using the source code, you will be able to run your application outside of the Delphi/BCB IDE. You will also be put on a mailing list so that I can notify you of any upgrades or bug fixes. You will receive point releases at no charge. You will also receive discounts on any major upgrades.

There is also a very complete zip utility which is useful as an example of how to use the component. With the example you can open and view zip files, extract files from zip files, add files, create new zip files and even view files from within the zip files by double-clicking on any compressed file. You can also add and modify file and zip comments as well as create self extracting zips and fix truncated zip files and even create and read Spanned Disk Sets and Blocked Zip Files. Self extracting stubs are supplied, however VCLZip will create an SFX file with any stubs you supply.

Please let me know of any bugs that you might find. See the contact information below.

Pricing and Support Philosophy

We are trying to keep the price very low so as to make zip capabilites available to developers that can't afford the $200+ price tags of most full featured ZIP libraries on the market today.

Email support is available. We will fix any bugs that are found AND aggressively add any enhancements that you think would make this component more productive. We typically respond to email within a few hours. We always respond to email within 24 hours. Support is also available via the VCLZip Support Forum at http://vclzip.proboards7.com.

Contact

Please feel free to test this component thoroughly before registering. I'll be glad to answer any questions you might have, just email me at

vclzip-support@4warding.com

This address redirects mail to more than one of my email accounts so please to not be alarmed if you ever get a delivery failure message. Chances are that your message made it to more than one of my accounts.

The latest evaluation version of VCLZip and up-to-date information can be found on the Internet at

http://www.vclzip.com

http://vclzip.bizland.com