readmevb.txt

给出了 zip 压缩算法的完整实现过程。

On Windows open this file in WordPad or use unzip -a to restore line ends.

Contents of the "windll/vb" sub-archive

This directory contains a Visual Basic project example for
using the zip32.dll library.  This project updates the Zip 2.3 VB
project example and includes some bug fixes and many additional notes
but is still compatible with zip32.dll.  See the comments in the form
and project files for details.  It has been tested on VB 5 and VB6.

Zip 2.31 and later have bug fixes as well, including some related to the
dll, and you should now use a version of zip32.dll from that.  This
dll includes a fix for the VB dll bug where Date, szRootDir, and
szTempDir were not passed in correctly and setting these to anything
but NULL could impact the dll and maybe crash it.  You can tell which
version you have by right clicking on zip32.dll in a file listing,
looking at properties, selecting the Version tab, and verifying the
Product Version is at least 2.31.

A new dll is available as part of the new Zip 3.0 beta.  A new
VB project included with that release now supports Zip64 and large
files and it fixes even more bugs but is not backward compatible
with zip32.dll.  You will need the new dll zip32z64.dll to use that
VB project, which can be compiled from the Zip 3.0 source.  See
windll/VBz64 in that release for details.

Note that the files may be saved in unix format with carriage returns
stripped.  These must be restored before the project can be successfully
used.  This can be done by using the -a option to unzip.  Another way to
do this is to open each file in WordPad, select and cut a line, paste
the line back, and save the file.  This will force WordPad to format
the entire file.

Ed Gordon
March 1st 2005, updated March 20th 2006