Solved

Unzip a file in VB code without pkunzip....

Posted on 1997-05-28
2
413 Views
Last Modified: 2010-05-18
I have to unzip a file in Visual Basic 4.0
How can I do that?
0
Comment
Question by:yello
2 Comments
 
LVL 2

Accepted Solution

by:
vorlon earned 50 total points
ID: 1426605
Yello,
Here's a way that I use and might work for you. It might work because I'm using vb3. The principal for vb4 should be identical.

What I do is I create a pif file that actually calls the pkunzip dos command. I set the pif file to run minimized, without focus and to terminate as soon as the pkunzip command is done. Form the  vb code just shell out the pif filename like this:

Sub Form_Click ()
    Dim x As Integer
    x = Shell("c:\myfiles\myunzip.pif c:\ziplib\file1.zip c:\temp", 6)
End Sub

Here, the 6 is redundant since the pif file is already setup to run minimized.

The pif file is easy to create. Only 2 fields need to be entered: the program name (pkunzip.exe) and the program title (My Unzip, or something).

The string that gets passed to the shell command has the following structure:

command params

where command is the pif file, and params is the parameters passed to the pif file. In the example above:

c:\myfiles\myunzip.pif c:\ziplib\file1.zip c:\temp

the pif file will unzip file c:\ziplib\file1.zip into c:\temp.

Hope this helps
0
 
LVL 4

Expert Comment

by:Chizl
ID: 1426606
http://www.apexsc.com/vb/ftp/misc/addzip.zip

The addZIP Compression Libraries are powerful, easy-to-use, PKZIP-compatible compression APIs for Windows. They allow the developer to add PKZIP-functionality to their programs. Includes source code (VB3) for a drag-and-drop .ZIP file manager.
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Background What I'm presenting in this article is the result of 2 conditions in my work area: We have a SQL Server production environment but no development or test environment; andWe have an MS Access front end using tables in SQL Server but we a…
This article describes some techniques which will make your VBA or Visual Basic Classic code easier to understand and maintain, whether by you, your replacement, or another Experts-Exchange expert.
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question