I expect that you should be able to register VCLZip Pro in about 2 weeks. I'll keep you posted here but you will find more up-to-date information on the forum. Please bear with me as I finish updating the Help File and clean up other loose ends. See you in the forum!

September 9th, 2002:

The registered version of VCLZip now works with Delphi 7. You'll want to download the BUG FIX UPDATE FILE to update VCLZip 2.23 to work with D7.

April 22, 2002:

A list of the currently reported bugs and their fixes can now be found here

VCLZip 2.23 is now available

• Added the OEMConvert property. Filenames stored in a PKZip compatible archive normally go through an OEM conversion to make them ascii compatible. When opening the zip file the conversion is undone. If you do not plan on having other zip utilities opening up your archives this conversion process is not really necessary. Setting this property to False will eliminate this process. The default value for this property is true for normal PKZip compatability.
• Added OnEncrypt and OnDecrypt events. These allow you to replace the standard pkzip encryption with your own. Data is passed to these events a buffer at a time. Use this with care as this is still somewhat experimental and I'm not sure how useful it is yet. You must make all changes within the buffer sent in to you. Treat the entire file as a stream. Byte for byte replacement only. No additional keys can be saved.
• Added the EncryptBeforeCompress boolean property. The default for this property is False and if left like this VCLZip will behave like normal. If set to True, VCLZip will encrypt each buffer prior to compressing it instead of afterwards. This will cause files to not be decryptable by normal zip utilities thereby adding a bit of extra security. However, this feature is not that useful when using the standard PKZIP encryption because that actually renders the data un-compressable beacuse it ramdomizes the data. Often, small un-compressable files will be STORE'd insteand of DEFLATED in the archive. Since, in this case, there is no compression, EncryptBeforeCompression is irrelevant. Therefore, this property is most useful when used with your own encryption technique (see OnEncrypt and OnDecrypt above) as long as it does not randomize the data too much.
• Bugs Fixed:
• IMPORTANT!!! Behavior of freeing the ArchiveStream (compressed stream) has been modified. VCLZip will now no longer try to free ArchiveStream, you must free it yourself. This was due to a problem where it would be freed automatically if there was a problem with the ArchiveStream when trying to open it as a zip file (corrupt). Best practice is that ArchiveStream should always point toward a TMemoryStream that you create anyway.
• Modified the SFX code (the code used to create the SFX stub distributed with VCLZip) so that it handles filenames that have been run through an OEM Conversion. The SFX was losing accented characters. This modification means that if you are creating zip files to be used as SFX's you will want to leave the OEMConvert property mentioned above, set to it's default value of True.
• Fixed the SFX code so that it works properly if you use Copy /B to concatenate a zip file to the stub. Due to a Delphi strange behavior sometimes path names for directory only entries would become corrupted.
• Modified so that when cursor is changed to hourglass by VCLZip, previous cursor is saved correctly instead of just changing it back to default cursor.
• Now saves Central Directory Extra Fields correctly.
• Removed reference to QConsts, replaced with RTLConsts.
• Sometimes a GPF would result if a corrupt zip file was opened.
• Due to a Delphi strange behavior sometimes path names for directory only entries would become corrupted.
• Using a wildcard in pathname added to FilesList did not work.
• Using '*.*' as a wildcard in files added to FilesList now is the same as using '*'.
• VCLZip will now check for CancelTheOperation during initial building of the fileslist instead of just during compression processing.
• Added a final call to OnTotalPercentDone with 100% because this didn't always happen.
• Attributes were not getting set correctly for directory-only entries.
• Fixed a problem that was not allowing ZipComment's to be added correctly to spanned or blocked zip files. Not the same fix as in 2.22.
• Directories (directory-only entries) were not being restored properly unless DoAll was True.
• You were unable to delete a directory from which files were recursively zipped until exiting your application.

July 21st, 2001:

Version 2.22 is now available for download. Here are the major bug fixes and enhancements:

• Now Delphi 6 compatible.
• New event called OnRecursingFile which gets called as VCLZip recurses directories searching for files that match a wildcard that is entered in the FilesList. This gets called each time a file matches the wildcard.
• Fixed a bug which kept diskettes from being labeled when creating spanned zip files on WIN31.
• Fixed a bug which sometimes did not allow zip comments to be added to blocked zip sets.
• Fixed a bug which caused VCLZip to not properly handle the IncompleteZip exception on spanned zip sets unless you called ReadZip prior to calling UnZip.

December 12th, 2000:

Version 2.21

• IMPORTANT: Changed default for FileOpenMode back to fmShareDenyNone as it had been for all but version 2.20. This means that VCLZip will backup files that are open by default. If you don't want this, then please add code to set FileOpenMode to what you desire.
• When working with temporary files, VCLZip will now rename, instead of copy, the temp file if the destination is on the same drive. This will speed up the adding of files to an existing zip file when the resulting zip file is very large.
• New event called OnPrepareNextDisk which is an event that will allow you, when creating spanned zip files across diskettes, to do things like format a diskette that has just been inserted, or to add or delete files from the diskette before continuing with the zipping process.
• Fixed a problem that was causing the CancelTheOperation Method to not work properly.
• Fixed bug which caused VCLZip to miscalculate space needed for zfc file if wildcards are put into the FilesList.
• Fixed bug so you could have FilePercentDone without needing TotalPercentDone when creating spanned zip files
• Fixed so relative_offset set correctly for spanned zips. Side effect of removing needless write of header.
• Added code to read local fileheaders if exception thrown when reading a central fileheader.
• Fixed problem where directories couldn't be created from directory entries because the fullpath wasn't known yet. Result of having moved this code to earlier.
• Fixed typo in creation of LOC header values which could cause error if reading local headers. Changed so Zip Comment starting position is calculated based on end of central record instead of end of file.
• Fixed a problem where drivepart (i.e. C:\) was not being stripped when saving relative paths.
• Added a BufferedStreamSize property which can increase the speed of creating zips to floppy (and other slow media) dramatically. The new default for this should increase the speed by as much as 3 times, but you can now tweak this especially for your application!
• Fixed a problem where zip comments in zfc files were not being read correctly.
• Added a setZipSignatures procedure which allows you to modify the signatures of your zip file. This will cause other zip utilities to not be able to recognize or read your zip files created with VCLZip. Useful if you want to add further security to your zip files.
• Some zip files would not open correctly, throwing an incomplete zip file exception due to an erroneous "extra field length" identifier in headers of some compressed files. These zip files are rare, but a very few people seemed to have several of them. This problem would not affect zip files created by VCLZip, and this problem should only occur in VCLZip 2.20, not in any previous version.
• If you had Range Checking turned on, VCLZip would get a range check error when using a wildcard that ended with a * as in 'somefile.*'.
• Under certain circumstances, drive information would not be stripped from path information if zipping recursively (including subdirectories)
• "Retrying" to zip a file that could not be opened using the OnSkippingFile event would not always work correctly.
• Creating spanned zip set to floppy should be faster now due to removing a needless header write to disk for each file.
• VCLZip would not compile correctly with MAKESMALL defined.
• Added code to make VCLZip work with BCB5. Haven't tested this yet though since I don't have BCB5 myself yet.
• Added readonly boolean ImproperZip property which will be set to True when some sort of problem is found when opening the zip file, even if recoverable. This property will be enhanced and refined in the future.
• If KeepZipOpen is set to True, when putting in the wrong disk in a spanned zip set, VCLZip would not always properly close the file on the old diskette before trying to open the file on the next diskette.
• Added ECantWriteUCF exception which will be thrown if VCLZip runs out of room to write the uncompressed file when unzipping.
• Timestamp was not being set properly when unzipping readonly files. Moved setting of the timestamp to before the attributes get set.

December 20th, 1999:

Version 2.20 is now available. There are new features in the following categories:

Performance

There are a few code optimizations that should speed up the zipping process slightly.

Spanned Zip Files

A new feature, turned on with the SaveZipInfoOnFirstDisk allows VCLZip to create spanned zip files that can be opened starting with the first disk instead of the normally required last disk of the spanned disk set by saving a Zip Configuration File on the first disk. This feature can be used even if creating the spanned zip file directly to your hard drive. The spanned zip file is still pkzip compatible and can still be opened by other zip utilities from the last disk.

A new property, SaveOnFirstDisk, allows you to save room on the first disk when creating a spanned zip file, to allow
room for other files, such as setup programs, data files.

Spanned zip files can now be directed toward disks greater than 2 gig in size as long as you are using Delphi 5 or BCB 4.

UnZipping

The new Selected indexed property offers another way to flag files to be unzipped. Files that have the Selected
property set to True can be unzipped using the UnZipSelected method. The Selected property will be cleared
(set to False) for each file as it is unzipped, but you can also call the ClearSelected method to clear them all. At anytime
the NumSelected property can be checked to see how many files have been selected.

Also, the UnZipToBufferByIndex and UnZipToStreamByIndex methods allow you to unzip files specified
by their index instead of by name or wildcard.

The BufferLength property allows buffered output (buffer smaller than the total uncompressed filesize) when unzipping
directly to memory. This will cause the OnGetNextBuffer Event to be called everytime BufferLength bytes have been
output by VCLZip.

Modified to work in all ways with zip files that have "extra fields" in their headers. These tend to be quite rare, but they do show up from time to time.

Zipping

Added a property called FileOpenMode which allows you to define the file open mode for files when they are opened to be zipped.

Added a Retry parameter to the OnSkippingFile Event that can be used to re-attempt to open a file for zipping that is open by another process. This gives the chance to close the file and continue with the zipping process rather than having to start over again.

Added a ENotEnoughRoom exception which will be thrown if there is not enough room to write to the archive, i.e. out of disk space.

The new OnUpdate Event gets fired when updating or freshening an existing archive. It is triggered for each file that already
exists in the archive as it is either replaced or kept in the updated archive.

The AddDirEntriesOnRecurse property will cause separate directory entries to be included in archives when doing recursive zips through
subdirectories.

Integrity Checking

A new method, CheckArchive, will perform an integrity check on all files in an archive. This is much faster than using FileIsOK
on each file if testing all files in an archive with VERY MANY files.

Further improved checking for corrupted zip files when opening zip files.

Encryption

The following new properties and methods allow lower level work with password encrypted archives:

DecryptHeader Property - Gets the decryption header for a particular compressed file in an archive
GetDecryptHeaderPtr Property - Same as DecryptHeader but easier to use in BCB.

DecryptHeaderByte Method - Tests a password against the decryption header found in the DecryptHeader property.
GetDecryptHeaderByteByPtr Method - Same as DecryptHeaderByte but easier to use in BCB.

Self Exctracting Executable

Changes were made to the ZIPSFX32.BIN stub itself:

• Modified to work with zip files containing "extra fields" in their headers.
• Modified to change mouse cursor to an hour glass during processing.
• Check for correct file size is now done automatically
• Now uses the end of central and central headers to find the first local header.
• Added a progress meter
• Better checking for corrupted zip files.
• Added an information window that can optionally be shown when the sfx is initially started

Miscellaneous

The behavior of the OnInCompleteZip Event has been greatly improved. You can now use this event to ask the user to
insert the last disk of a spanned disk set rather than having to handle this situation from outside VCLZip.

The Help File was improved.

April 18th 1998:

There are lots of new features and improvements for version 2.18. Read the list closely to find ones that are most important to you:

1) Thanks to the hard work of a fellow registered user, added the capability to remove all dependencies on the Dialogs, Forms, Controls, and FileCtrl units by defining the conditional MAKESMALL, which results in a smaller footprint. This can be quite useful when putting VCLZip into a DLL for instance. In order to make this work, go into your Project | Options and select the Directories/Conditionals tab and enter MAKESMALL in the conditional defines text box. In Delphi you can add this conditinal define to the project options of your application that uses VCLZip and then do a "build all". In BCB you will have to add this to the project options of the package that contains VCLZip and then rebuild the package.

If you define MAKESMALL, the only things you lose are:

a) ZIP file open dialog box that appears when the ZipName is set to "?"
b) Select Directory dialog box that appears when the DestDir is set to "?"
c) Changing the cursor to an hour glass during some operations.
d) No long filename support in Delphi 1

2) Made VCLZip completely BCB4 compatible.

3) Added some exception handling to KPUNZIPP and KPINFLT, mainly to handle unexpected situations when wrong passwords are entered. This fixes the problem with PRP, the password recovery program.

4) For Borland C++ Builder, changed any COMP types to double, getting rid of the compiler warnings for unsupported comp type. This affects the OnStartZipInfo and OnStartUnZipInfo events, so you'll have to change the comp parameter to double in these events if you use them (in both your header files and in the CPP files).

5) Modified OnStartUnZip event so that FName (the filename of the file that is about to be unzipped along with complete path) is now a VAR parameter and can be modified. This allows you to change the path and name of a file that is about to be unzipped. This is especially helpful in applications like Install Programs.

NOTE: You will need to change your current code to add the VAR to the event definition and implementation if you already use this event in your application. (In BCB, add a & just before the parameter instead of VAR)

6) Moved many type definitions to VCLUNZIP.PAS so that kpZipObj won't have to be included in your USES list.

7) Fixed bug that caused GPF when setting Zip Comment to '' (empty string).

8) Moved strings in VCLZip/VCLUnZip into a string table, making the code size a little smaller as well as making it much easier to localize string information. However you have the option of not using the new string table, for whatever reason, by defining NO_RES in your project options (in the conditional defines text box on the Directories/Conditionals tab).

9) Removed the need for several files. No longer included are kpstrm.res, kpstrm.rc, kpsconst.res, kpsconst.rc, kpstres.pas, and for Delphi 1, kpdrvs.pas. In some cases the need for these files was eliminated and in other cases just rolled into the newly included kpzcnst.rc, kpzcnst.pas, and kpzcnst.res. Definining NO_RES in your project options will elimiate the need for these new files but will make your code size slightly larger and you won't be able to localize your application without changing VCLZip source code.

10) Modified the OnFilePercentDone and OnTotalPercentDone progress events to work better when creating spanned disk sets and blocked zip sets. They no longer report 100% when the compressed file still has to be copied to disk.

11) Added the ReplaceReadOnly property. Setting this to true will allow files with the ReadOnly attribute to be replaced during the unzip process.

12) Added the ifNewer and ifOlder options to the OverwriteMode property. (This had somehow made it into the help file but not into VCLUnZip)

13) Added the SFXToZip method which will convert an SFX file to a regular zip file. The header pointers will be properly adjusted during the conversion.

14) Fixed a problem where the OnGetNextDisk event would always revert to the DefaultGetNextDisk method instead of what you entered into the Object Inspector each time your project was re-opened.

15) Fixed a bug that caused CRC errors when unzipping files from spanned disk sets if they were STORED (no compression) and spanned across disks.

16) Added the OnZipComplete and OnUnZipComplete events. If defined, these will fire at the very end of a zip or unzip operation (after all files have been processed, not after each file). These events will rarely be used since, normally you will be able to do the same thing at the point that the call to Zip or UnZip returns, but these events can be useful when using VCLZip in threads where in certain circumstances the return from the Zip or UnZip methods are not seen.

17) Creation of SFX files has never been easier!!! The addition of the MakeNewSFX method allows you to create Self Extracting Executables without the need to create a zip file first. The files that you specify in the FilesList property will be zipped, using all the normal VCLZip property settings, and the SFX will be created, all in one step! In addition, you can create configurable SFX files using this method, and you can do this especially easy by adding the new unit kpSFXOpt to your application's USES list and using the new 32bit SFX stub that is now distributed with VCLZip. This allows you to easily set things like SFX Dialog caption, default target extraction directory, file to launch after extraction, etc.

18) Fixed a memory leak that only affects applications using VCLZip that are compiled with Delphi 2, and that use wildcard specifications in the FilesList property.

March 1st 1998:

I've added an evaluation version and a demo project for C++Builder 3. Please let me know if I have left anything out of these as this is a first pass, so please bear with me. I have not yet modified the help file yet for BCB, so for now, you'll have to go by the Delphi help file (for the most part just use the C pointer reference '->' instead of the usual Delphi '.'). The demo project is pretty much the same complete Zip Utility example that comes with the Delphi demos except that it has been completely re-written in BCB 3. I'll be re-writing the Streams example in BCB too given time. I'll work on adding a simpler example project too.< /FONT>

Feb 17th 1998:

Version 2.17a is now available for download. Just some minor bug fixes are all that will be found in this version:

• Fixed a bug that was keeping VCLZip from reading truncated zip files or sfx files that did not have their headers adjusted.
• Fixed a bug that was causing a directory to be created on the C drive when doing integrity checking with the FileIsOK property.
• Added {$V-} to kpZipObj.PAS
• Moved two AssignTo methods to public instead of private in kpZipObj.PAS

Registered users who already downloaded the source for version 2.17 may retrieve a smaller zip file with only the modified files in it.

Feb 8th 1998:

VCLZip 2.17 is now available in the download area. I had not planned on any upgrades before version 3.0, but a lack of time to devote to version 3.0 development prompted me to a new version with some of the features that people have been asking for. New in version 2.17 are:

• Added Memory zipping and unzipping capabilities through the UnZipToBuffer and ZipFromBuffer methods. See the documentation for these methods in the Help File for more information.
• New FileIsOK[Index] Property allows you to check for the integrity of individual files within an archive without actually unzipping the file. Returns false if the file may be corrupted.
• Fixed a bug that kept checking of volume labels from working on WIN31 when working with spanned disk sets
• Removed all references to ChDirectory so that VCLZip will be more thread safe allowing separate instances of VCLZip in separate threads to be performing zip/unzip operations at the same time.
• A new public property PreserveStubs allows you to make modifications to sfx archives and have the archive remain an SFX rather than revert back to a normal zip file
• Added a default OnGetNextDisk event. If one is not defined, then the default event will be called when the situation arises that a new disk is needed when zipping or unzipping a spanned or blocked zip archive.
• Added more power to the wildcard capabilities. Now you can qualify the * wildcard character, for instance:
  
  *<a-e> would satisfy any number of contiguous characters as long as they are all a thru e.
  *<!a-e> would satisfy any number of contiguous characters as long as none of them were a thru e.
  
  This allows you to do things like include files in specific direcories into your ExcludeList. For instance:
  
  VCLZip1.ExcludeList.Add('c:\test\*<!\>.txt')
  
  would exclude the zipping of all .txt files in the test directory but not in any subdirectories.
• Fixed other minor bugs and made other code enhancements.

I still don't have a guess as to a date that version 3.0 will be available. I'll post information as soon as I do though.

PLEASE let me know if you find any problems at all with version 2.17.

October 25th 1997:

VCLZip 2.16 is now the production version. If you previously downloaded version 2.16 (as a beta) you should download this newer version as there have been a few bug fixes.

October 4th 1997:

VCLZip 2.15 is now the production version when you register. VCLZip 2.16 is now available for download and it is now currently considered to be the beta release. It is also the evaluation version.The only real change in VCLZip 2.16 is a change in how the OnSkippingFile now works. OnSkippingFile will now correctly be called when VCLZip tries to zip a file that is locked by another application. As always, VCLZip will continue with the next file, but previously you were not notified that such files were skipped in the zip process.

This does however make VCLZip 2.16 slightly backward in-compatible with version 2.15 and earlier if you are using the OnSkippingFile event, because of an additional parameter. Please see the OnSkippingFile Event in the Help File for details on the difference between the version 2.15 and and 2.16 implementations.

The source code for VCLZip 2.16 is also available to registered users.

October 4th 1997:

VCLZip 2.15 is now available for download. For registered users it will be considered to be a beta for about another week. Modifications for 2.15 include:

• PackLevel can now be set to 0 (zero) which means no compression at all (STORED only).
• New property ExcludeList is a new stringlist that you can add filenames and wildcards to in order to specify files that you do not wish to be included in an archive.
• New property NoCompressList is a new stringlist that you can add filenames and wildcards to in order to specify files that you wish to be STORED with a PackLevel of 0 (zero), no compression.
• All compiler warnings and hints were removed.

August 31st 1997:

A bug was found in the evaluation version of VCLZip only, so a new 2.14 distribution is now in the download area. The effect of the bug was to not allow the evaluation version to work properly if the VCLZip component was created dynamically rather than statically dropped on a form. This problem ONLY affected the evaluation version, so if you are already a registered user, you do not need new source code.

August 26th 1997:

An evaluation version of VCLZip 2.14 is now available.

August 13th 1997:

• Version 2.14 is now available to registered users. This version includes the following changes:
• Delphi 4 compatability.
• Added ability to use complex wildcards when specifying which files are to be zipped. This includes wildcard characters not only in the filename but also in the pathname. This allows you to specify directories using wildcards, for instance:

VCLZip1.FilesList.add('c:\test\w*\mycode*.pas');

would get all PAS files beginning with mycode in subdirectories under TEST that begin with the letter w. Wilcards may be much more complex than this. Please see the help file for more information.  

• Added the ability to override the RECURSE property setting when specifying files to be zipped. This avoids having to use multiple zip operations to achieve the same results. By adding the following characters to the beginning of the filenames being added, you can override whatever the current setting is for the RECURSE property:

'>' will force recursion into subdirectories
'|' will force NO-recursion

For instance:

VCLZip1.FilesList.add('>c:\windows\*.ini');< /FONT>

will get all .ini files in and below the windows directory regardless of what the recurse property setting is.

and:

VCLZip1.FilesList.add('|c:\windows\sys*\*.dll');

will get all .dll files in subdirectories of the windows directories that start with 'sys' but will not recurse into any directories below the sys* directories.

• The [ and ] characters previously used as special wildcard characters have been changed to < and > since [ and ] are valid filename characters. If you still need to use the previous characters for backward compatability, I can show registered users how to easily modify a couple of constants in the source code in order to go back to the old style. See "Using Wildcards" in the help file for more information.
• A few bug fixes.

Unfortunately an evaluation version of 2.14 isn't quite ready yet. It will be uploaded as soon as possible.

July 10th 1997:

VCLZip 2.13 beta is now available to registered users. A demo of the new version should be available soon. The changes for this version include:

• New boolean property, ResetArchiveBitOnZip, causes each file's archive bit to be turned off after being zipped.
• New boolean property, SkipIfArchiveBitNotSet, causes files who's archive bit is not set to be skipped during zipping operations.
• A few modifications were made to allow more compatibility with BCB 1.

Also, the Help File was improved somewhat. It includes information on the new properties and was cleaned up a little too. You can download that now.

May 10th 1997:

VCLZip 2.12 is now available and it is now the current production version. I even snuck a new feature into this one!! The changes included in this new version are:

• Added a TempPath property to allow you to determine where VCLZip will create temporary files.
• Modified VCLZip so that any temporary files created will have unique names to avoid any filename clashes in the temporary directory. This also fixes problem working with archives that reside in the temporary directory.
• Fixed a RelativePaths bug
• Fixed a bug which caused a "list out of bounds" error if a file in the FilesList doesn't actually exist

Download version 2.12 now and try it out!!!

May 3rd 1997:

I have added a bug list to this web site in order to keep you up-to-date on the status of bug-fixes. If you experience something that appears to be a bug, check the bug list to see if it may have already been reported. If it has been fixed and you need the fix before the next version will be available, send me an email to see if I can supply you with the source code patch (that is, if you are a registered user ofcourse). If your problem does not appear on the bug list then please report your problem to me and I'll add it to the list.

April 29th 1997:

Version 2.11 Beta is now available. It fixes the following problems which were found in the 2.10 Beta:

• Fixed password encryption bug for 16 bit.
• Fixed "invalid pointer operation" when closing application bug.
• Fixed path device truncation bug which caused inability to modify existing archives in 16 bit.
• Fixed problem with canceling during wilcard expansion bug.
• Added capability to better handle corrupted timestamps.
• Added capability to open and work with SFX files that were created with the COPY/B method (header files not adjusted).
• Other small bug fixes and code improvements.

April 13th 1997:

I found that I accidentally had the 2.10 beta download links pointing at the same files as the 2.03 downloads. I've fixed those links and am close to uploading a new beta (2.11). I found the following problems that the new beta will address:

• Creating archives with passwords does not work in 16bit VCLZip (this includes all versions). Unzipping password encrypted files does work however. This will work in the new 2.11 beta due to be out soon.
• Modifying an existing archive does not work under the current 2.10 beta for 16bit VCLZip. This will work under the new 2.11 beta.

March 29th 1997:

VCLZip 2.10 is now available in BETA form. It appears to be stable but more testing is required. Let me know if you have any problems using version 2.10. This version has some new features...

• 16 bit VCLZip will now, by default, store long file and path names when running on WIN95 or NT.
• New property (Store83Names) allows you to force VCLZip to store only DOS 8.3 format file and path names.
• Better UNC path support.
• Fixed a bug allowing files to be added to empty archives.

March 13th 1997:

VCLZip 2.03 is now available. This point release fixes sevaral bugs that were found, mostly related to using VCLZip with Delphi 1 as well as a couple other bugs.

• Volume labels now get written correctly to spanned disk sets in Delphi 1 for all versions of Windows.
• Delphi 1 VCLZip now correctly recognizes when it is running on Windows NT.
• Fixed a problem with zipping files in the root directory when StorePaths = True < /FONT >
• File and Zip Comments are now read correctly from spanned/blocked zip archives.
• Fixed a bug that was causing "Duplicate Object" errors.

February 15th 1997:

VCLZip 2.02 is now available. Modifications include:

• Fix for file comments which were supposed to be fixed in version 2.01 but weren't.
• Fix for stream zipping. Version 2.01 would not create a new archive if using a stream. (The Stream Demo now allows creating new zip files to streams too)
• A few other minor modifications to further solidify the code.
• A modification to the Zip Utility Demo which allows unzipping from Blocked zip files as if they were single zip files.
• Added a read-only, published ThisVersion property which reflects the version of the VCLZip/VCLUnZip that you are currently working with.

February 8th 1997:

VCLZip 2.01 is now available. Modifications include:

• Fixes for exceptions that were caused when CANCELING a zip or unzip of a
  spanned zip file.
• Fix for a possible problem when zipping or unzipping a spanned zip file
  when one or more of the compressed files resided on more than 2 of the spanned
  parts.
• Fix for file comments which were broken in version 2.00.

January 26th 1997:

VCLZip 2.00 is now available as the official version of VCLZip. Download a complete working demo version of VCLZip 2.00 and try it out!

New features of this version include:

• RelativePaths is a new VCLZip property giving you the option to store relative path information for each file
  instead of complete path information.
• The RootDir property will now allow you to extract files from an archive that was not previously compressed using the RelativePaths property as if it had been.
• ArchiveStream is a new VCLUnZip property allowing you to work with archives as in-memory TStreams. The Stream Demo now uses this property demonstrating stream to stream zipping/unzipping.
• OnStartZipInfo Event now allows you to add a zip comment to a new archive
• OnStartZip Event now allows you to modify information that is stored with each file just before it is zipped.
• OnBadPassword Event now allows you to reset the password and retry the same file again.
• DateTime Property is now also writable along with Filename and Pathname
• Busy Property is a new property set to True during Zip and UnZip operations.
• VCLZip is now completely Delphi 1 compatible for both compression and decompression.
• VCLZip will no longer include the archive that is currently being created in itself when the archive is being created in the same
  directory as files are being zipped from, when wildcards would otherwise include the archive.

I can always use feedback from anybody that has tried out VCLZip. Be it good or bad I'd appreciate your opinions. If you are looking for a zip library and choose another besides VCLZip, let me know why so that I can take that into account for the future.

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Contact vclzip-support@4warding.com for further information

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