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-
- Delphi Zip/Unzip Package, v1.0
- For Delphi v2+
-
-
- NOTE: The DLL source code is distributed separately due
- to it's size, and the fact that most Delphi users of this
- package probably don't want the C source for the DLL's.
- The DLL source is also freeware, and will remain that way.
- The filename of the DLL source code is DZDLLSRC.ZIP, and
- it comes complete with a VC++, v4.0 makefile.
-
-
- Quick start: Stop reading this file, and follow the
- instructions in file INSTALL.TXT.
-
-
- This release contains:
-
- DELZIP10.ZIP - overall Freeware Delphi Zip v1.0 package
-
- DOC.ZIP - various information about this release
- DLL.ZIP - the ZIPDLL and UNZDLL DLL's (require Win32)
- Put these into C:\WINDOWS\SYSTEM
- VCL.ZIP - Essential support files. Includes the very
- useful TZipMaster VCL, as well as the DLL import
- specifications and callback files. Put these
- into your VCL search path.
- DEMO1.ZIP - Delphi v2 source code for demo program #1.
- DEMO2.ZIP - Delphi v2 source code for demo program #2.
- DEMO3.ZIP - Delphi v2 source code for demo program #3.
-
-
- Notes About My Demo Programs
-
- All three demo programs are using an icon I designed. It has
- two images in it: 16x16 and 32x32. Developers who have come
- from the Win 3.1 world should get used to providing a 16x16
- image for their icon, because Win95 and NT4 put these small
- icon images on the form's titlebar, and on the taskbar. If you
- don't make a 16x16 image in your icon, Windows itself will make
- one from the 32x32 image, but it usually doesn't look very good.
-
- I am NOT using any Windows Registry keys in any of the demos,
- or in the DLLs themselves. Also, because of my desire to limit
- unrelated code, the demo programs don't make use of any .INI
- files. Your own application programs should save the user's
- ZIP/UNZIP options, and drive/directory choices in a .INI file.
-
- All of the 3 demos require the 2 DLLs:
- ZIPDLL.DLL and UNZDLL.DLL
-
-
- Notes on Demo Program 1
-
- This is perhaps the most useful demo program for you. It
- shows how to make a somewhat comprehensive ZIP utility program
- using the ZipMaster VCL.
- Using a fairly small set of .PAS files, you get a surprising
- amount of functionality. This is the beauty of Delphi!
- Additional VCL's needed by Demo 1: TZipMaster, TSortGrid
-
-
- Notes on Demo Program 2
-
- This is a "short and sweet" demo that shows you how to use
- the ZipMaster VCL to do some quickie ZIP operations inside a
- program, whose main purpose may be unrelated to ZIP.
- For example, you may want to let the user ZIP up his data
- files with a minimum of fuss. You, the developer, may already
- know the names of the data files, so you may want to embed the
- ZIP operation to make your program easier-to-use.
- The value here is that this demo separates out the ZIP
- functionality from the user interface.
- Additional VCL's needed by Demo 2: TZipMaster
-
-
- Notes on Demo Program 3
-
- This is an advanced demo program showing you how to use the
- DLL's at the lowest possible level. It uses the ZIPDLL.PAS and
- UNZDLL.PAS import units, and the ZCALLBCK.PAS callback unit, to
- directly talk to the DLLs.
- Demo Programs 1 and 2, which use the ZipMaster VCL, can only
- provide you with a subset of the DLL functionality (albeit, a
- very useful subset).
- This level of programming is not recommended for most
- applications. In most cases, you'll prefer to use ZipMaster-
- based programs (like demos 1 and 2), instead. This level of
- programming is definitely NOT RAD!
- Additional VCL's needed by Demo 3: ZipDir, TSortGrid
-
-
-
- Distribution Policy
- Guidelines for Legal Re-distribution
-
- 1) This applies to both end-users and developers. The meat of
- this package is the .DLL files, and they are needed by all
- of your end-users if you use this ZIP package in your
- program.
-
- 2) You must not charge money for any part of the ZIP package.
- Warning: The primary concern here is if you will market a
- new package that is only slightly more than a verbatim copy
- of this package, or one of it's demos. ANY release you sell
- is OK as long as you charge ONLY for the changes you make.
-
- 3) You MUST either distribute the source code for this ZIP
- package, or give a WWW site where it can be obtained
- freely. This can be on a Help...About screen, in printed
- documentation, or in text files distributed with your
- package. Yes, it does seem odd to have this requirement
- for end-users who aren't programmers, but there is no
- mistake. After all, it isn't hard to give them a URL
- and a few words explaining what it is for.
-
- 4) You must handle product support with your own end-users.
- This is imperative, because I don't have anywhere near
- enough time to do support for end-users.
-
- 5) You must document the Info-Zip's WWW home page URL, but
- don't expect any help from the Info-Zip group, since my
- release is only a derrivitive of their work. They are
- very busy doing support for their "official" releases.
- Info-Zip: http://www.cdrom.com/pub/infozip/
-
- 6) I will handle support issues with programmers using this
- package on a time-available basis. Since this is being
- distributed as freeware, you can't expect the kind of
- support you'd get from a commercial vendor. Please limit
- your questions to those that directly pertain to this
- ZIP package. If you just have a Delphi question in
- general, you should consider other forums first (like
- the excellant BDELPHI32 forum on CompuServe, or the
- Delphi Talk mailing list on the Internet).
- If you qualify for membership in a private Delphi
- forum, such as the Object Lessons mailing list for
- graduates of the Object Lessons seminars, then that
- would probably be your best bet for Delphi questions.
-
- 7) You may NOT distribute executable versions of my demo
- programs to end-users without my approval. These are
- only example applications, and I don't think they're
- good enough yet to be distributed to end-users yet.
-
-
- Other Languages
-
- Developers of languages other than Delphi may want to use
- these DLLs. You can use these DLLs with VC++ and Borland C++
- by simply building import/export libs for them. I recommend
- a freeware utility called IMPLIB32.EXE for this purpose. Do
- a Web search to find a copy of it.
-
- The offical Info-Zip group is also working on a standard
- set of DLLs for C++ on Win32, but their efforts have been
- delayed several times, and weren't ready for me to use as a
- baseline in my efforts. Perhaps our efforts will converge
- someday. For now, however, my DLL interface is much
- different than theirs.
- I'll try to keep any future DLL interface changes
- transparent to users of the ZipMaster VCL.
-
- Visual Basic users won't find it easy to use my DLLs, so
- I may do a VB port of this package someday. I'd like the
- support of an advanced VB programmer to help me in this port,
- so send me e-mail if you are experienced and want to help.
- Of course, whomever helps me in the VB port will be given
- appropriate credits in the release documentation, and in the
- VB-specific source code. My only caveat: the final release
- must be freeware, and include all source code.
-
-
- Updates to this Software
-
- Future updates to this software will be announced on
- the BDELPHI32 forum on CompuServe, and will be posted in
- the BDELPHI32 file area on CompuServe, and will be posted
- at these Web sites (if possible):
-
- www.objectlessons.com
- Object Lessons Delphi training company.
- Serious Training for serious programmers.
-
- www.delphi32.com
- One of the first, and one of the best Delphi sites.
-
-
- Torry's is an excellent site in Russia - visit them.
-
- www.cdrom.com/pub/DSP
- Delphi Super Page - DSP. This is also one of the first
- and best. It's home country is Poland, but has mirror
- sites in many other countries.
-
-
- Please DO NOT ask me to e-mail you when this software
- is updated. There are hundreds of users of this package, and
- I can't maintain such a long list in my free time!
- If anyone would have the time and ability to host an Internet
- Delphi Zip mailing list, then please let me know! I'd like to
- participate in this type of endeavor, but I don't have the time
- to host it.
-
- You may e-mail be with your bug notices and proposed
- changes to this package. If your message comes with suggested
- changes to source code, they WILL be evaluated, and, if used,
- you will get the appropriate credit in the next release.
-
- Special thanks go to Dennis Passmore, who offered many
- useful suggestions and code snippets during the development of
- this software.
-
-
- Eric W. Engler
- Compuserve: 71673,2147
- From the Internet: 71673.2147@compuserve.com
-
- Please do NOT try to send me file attachments unless you
- are doing it from CompuServe. I can supply you with my
- private e-mail address if you want to send me an attachment
- from the Internet.
-