[AccessD] File Slice/Splice

Hi Jürgen:

I have a piece of code around somewhere, in VB, that compresses and
uncompresses a file or more. If you are interested I could try digging it
up.

Jim

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com]On Behalf Of Jürgen Welz
Sent: Wednesday, May 26, 2004 9:37 AM
To: accessd at databaseadvisors.com
Subject: RE: [AccessD] File Slice/Splice


Charlotte is correct.  The IT people see Access as a program that creates
files just like Notepad creates files.  Since they installed Access 97, I
have permission to use it to create mdb/mde files.

Winzip or its ilk are not permitted.  It is not possible to create a
shortcut on the desktop, shell to DOS, create ODBC connections or install
any software.  It is also not possible to email certain files nor to access
an email account from outside the offices except through Terminal Services,
with no ability to save data to a disk at a remote machine.  Only a few
laptop users have access to a floppy drive at all and it is not possible for
me to log on to the LAN with any laptop I bring on site.  Any attempt to
install any software on a laptop allowed on the system or on the terminal
server is blocked and fails.  If I want to email myself an Access
application I'm working on, I currently have to break it into several dozen
files with a few forms/reports/modules in each, rename them as doc files and
reassemble the objects into a container offsite.  This tactic does not work
with large graphic files though.  I've seen an mda at Dev's mvps.org site
that purports to do this but I'm not sure I can get it up and running in the
target environment.  For this reason I'm looking for some straight forward
File I/O code that will do the trick.

They are starting to move to A2K3 and I've converted the application but my
users cannot run it yet and they have not addressed self signing the
'macros' in Access.  When they do, the jig may be up.

Ciao
Jürgen Welz
Edmonton, Alberta
jwelz at hotmail.com





>From: "Charlotte Foust" <cfoust at infostatsystems.com>
>
>Arthur,
>
>I think the key issue was "getting it installed".  Some systems are so
>locked down that it isn't possible to get winzip installed on machines when
>needed.
>
>Charlotte Foust
>
>-----Original Message-----
>From: Arthur Fuller [mailto:artful at rogers.com]
>Sent: Wednesday, May 26, 2004 7:27 AM
>To: 'Access Developers discussion and problem solving'
>Subject: RE: [AccessD] File Slice/Splice
>
>
>Just out of curiosity, what is the security-paranoid distinction between
>code you write and code that somebody known worldwide such as the author of
>WinZip wrote? (I realize that you too are known world-wide, at least among
>Access cognoscenti, but that wasn't my point.) Frankly, from my point of
>view, I would sooner trust WinZip than my own efforts to do the same. After
>all, they're on Version 9 or so!
>
>Arthur
>
>-----Original Message-----
>From: accessd-bounces at databaseadvisors.com
>[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Jürgen Welz
>Sent: Wednesday, May 26, 2004 10:17 AM
>To: accessd at databaseadvisors.com
>Subject: [AccessD] File Slice/Splice
>
>
>I'm looking for some VBA to cut a file into chunks of a size that can be
>
>emailed and then reassemble the full size at the destination.  I've been
>
>playing with File I/O for a few hours, opening binary, reading into a
>string
>or byte array and then Output to new files but it looks like I'm getting a
>few additional bytes in the reconstituted file.  Presumably I'm adding some
>delimiter to the file segments that mess up the file since it appears I'm
>adding two bytes for each chunk plus another two overall.
>
>Does anyone have a solution?  This is for sending large graphics files in
>that security paranoid place I was formerly employed.  They have an
>attachment size limit of 5 megs and a bunch of 18 - 24 megabyte tiff files
>that need to be sent out and, as usual, the IT department will not budge.
>Winzip and it's disk spanning would be ok but there's no getting it
>installed.
>
>
>Ciao
>Jürgen Welz
>Edmonton, Alberta
>jwelz at hotmail.com

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