using a dll from another dll 2

[sfunk]

Hello,

I am developing a dll that will be used by other people.

One of the features I would like is to provide a backup of an Access .mdb file. When I copy the file to another directory I would like to zip the file as well. I know of some 3rd party dlls that will zip and unzip files. If I use one of these dlls do I have to distribute that dll along with mine? Does MS have a component that provides compression and uncompression? Is there a way to do compression programmatically?(without a million lines of code)

Sincerely,
Steve

 

[vb5prgrmr]

Yes you would have to distribute that dll along with yours since you are calling it from yours.

 

[strongm]

It seems to be a little known fact, but W95 SP3 and later versions of Windows/NT have a built-in ability to create zip files through the use of CABINET.DLL

Here's a link to the documentation and SDK, which is sadly all designed for C/C++

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dncabsdk/html/cabdl.asp

Unfortunately, it does take quite a lot of code to get this working in VB.

 

[sfunk]

Have you created a working piece of code that creates a zip file in VB?

This is way over my head!!!!

Has anyone been able to create zips in VB without 3rd party dlls?

Sincerely,
Steve

 

[strongm]

Um...yes..but it was a while ago, and it was ourely experimental...and, most importantly, I seem to recall that I used a 3rd party wrapper library because I had problems prototyping the function calls in VB.