[AccessD] Cannot CreateOutout File

Hey Doug
Is that your article "Working with Compressed (zipped) folders in MS Access"
in the Database Journal? Why didn't you just send me there? It is perfect,
even shows me how to list the contents of the zip file. Wow!!! I must have
been really lost in the ozone on the weekend cause I spent hours trying to
find out how to do that.
Incredible, maybe I am just getting to old for this stuff, I should be
seriously starting to think about buying a "weiny wagon" and just hanging
out at the beach.

Tony Septav
Nanaimo, BC
Canada
 

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Doug Steele
Sent: Sunday, February 05, 2012 8:42 PM
To: Access Developers discussion and problem solving
Subject: Re: [AccessD] Cannot CreateOutout File

FWIW, here`s a blog post that popped up today about zipping from VBA:

http://accessexperts.net/blog/2012/02/06/zipandunzipfrommicrosoftvba

Doug

On Sun, Feb 5, 2012 at 2:53 PM, Stuart McLachlan
<stuart at lexacorp.com.pg>wrote:

> On 6 Feb 2012 at 8:48, Stuart McLachlan wrote:
> >
> > I posted some VBA a long time ago to do this directly, I'll see if I 
> > can
> find it.
> >
>
> Found it - originally posted by me 18 Feb 2009:
>
> There has just been a discussion over on dba-Tech about the built in 
> Zip capabilities in Windows (XP onwards?) where "Compressed (zipped)
Folders"
> are just ordinary zip files.
>
> This  got me thinking about how you could use the built in 
> capabilities to manage zip files  through VBA rather than needing a 
> third party DLL, the Winzip CLI or whatever.
>
> Turns out it is trivial to to create an empty ZIp file, it is just a 
> string of 22 bytes as follows:
>
> Function CreateNewZipFolder(Filename As String) As Long Dim 
> strEmptyZip As String strEmptyZip = Chr$(80) & Chr$(75) & Chr$(5) & 
> Chr$(6) & String$(18,
> Chr$(0)) Open Filename For Binary As #1 Put #1, , strEmptyZip Close #1 
> End Function
>
> You can now use a Shell.Application object to work with this file/folder.
>
> Firstly set a reference to  Microsoft Shell Controls and Automation:
> Shell32.dll
>
> Then you just need a couple of simple functions:
>
> Function AddFileToZip(ZipFileName As String, Filename As String) 
> 'Zipfilename and Filename need to be full paths  Dim oShellApp As 
> Shell32.Shell  Set oShellApp = CreateObject("Shell.Application")  
> oShellApp.NameSpace(ZipFileName).CopyHere Filename  Set oShellApp = 
> Nothing End Function
>
> and
>
> Function ExtractFileFromZip(ZipFileName As String, DestDir as 
> String,Filename As String) 'Zipfilename and DestDir need to be full 
> paths 'Filename should just be the filename without a path  Dim 
> oShellApp As Shell32.Shell  Set oShellApp = 
> CreateObject("Shell.Application")  
> oShellApp.NameSpace(DestDir).CopyHere _
> oShellApp.Namespace(ZipFileName).Items.Item(Filename)
>  Set oShellApp = Nothing
> End Function
>
> To extract all files replace
> oShellApp.Namespace(ZipFileName).Items.Item(Filename)
> with
> oShellApp.Namespace(ZipFileName).Items
>
> Note that this is a bare shell and you will need to add a bit of error 
> checking - oShellApp doesn't like it if files/directories don't exist 
> and will pop up a standard "File exists, do you want to copy" dialog 
> if the zip or destination already contains the file.
>
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>
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