VB & WinZip

[Baz]

I am new to Vb but have done alot of VBA with Access. I now wish to build a small utility that will open WinZip or PkZip in the background and then I can copy a couple of database files to it and then close Winzip/Pkzip after the copying is complete. I would also like to find out how to close a open application through VB.


Any help would be appreciated.


Baz...........(:0)..................

[Fred Peters]

The Zlib library is a public domain library for zip file compression. It is written in C++ however, so you would need to compile it into a dll to use it in VB. I don't know where a current site for Zlib is.


If that is too much trouble you could use an Active X control. I have seen at least a couple that handle zip files.


Good luck,


Fred

[thomas_hd]

You can use the Api-functions FindWindow and SendMessage to solve your problem.
With findwindow you can search for the window, you want to close.
Then you send a WM_CLOSE command with the SendMessage command.
SendMessage accepts 2 params. You need only to specify one of them.

If youre not sure about the class/ or windowname start spyxx.exe from the vs_studio, it will list you class & window name of every running app.

Regards

Thomas


public Declare Function FindWindow Lib "user32" Alias "FindWindowA" (byval lpClassName as string, byval lpWindowName as string) as Long
public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (byval hwnd as Long, byval wMsg as Long, byval wParam as Long, lParam as Any) as Long
public Const WM_CLOSE = &H10

'this function finds a window and closes it
public Function FindWin(taskname as string) as Boolean
Dim result as Long
Dim leave as Boolean
result = FindWindow(vbNullString, taskname)
If result > 0 then
result = SendMessage(result, WM_CLOSE, 0, vbNullString)

dat = time
'test if window has closed
Do While leave = false
DoEvents
datIn = time
result = FindWindow(vbNullString, taskname)
If result = 0 then
leave = true
Exit Do
End If
If CSng(datIn - dat) > 0.0005 then
leave = true
End If
Loop
result = FindWindow(vbNullString, taskname)
If result <> 0 then
MsgBox "Fenster konnte nicht geschlossen werden"
FindWin = false
Exit Function
End If
else

End If
FindWin = true
End Function

[Iouri]

c = Shell("d:\temp\pkunzip.exe d:\temp\t001015.zip d:\temp", vbHide)




Iouri Boutchkine
iouri@hotsheet.com

[Iouri]

'========another way of doing it========
' Inputs:'Example:
'source = app.path & "source.exe"
'target = app.path & "target.zip"
'zip = true (compress)
'zip = false(uncompress)



Function winZipit(ByVal source As String, ByVal target As String, ByVal zip As Boolean)
zipIT = App.Path & "winzip32 -a"
unzipIT = App.Path & "winzip32 -e "


If zip = True Then
Shell (zipIT & target & source)
Else: Shell (unzipIT & target & source)
End If
End Function


Iouri Boutchkine
iouri@hotsheet.com

[John G Duffy]

Iouri,
Your reply regarding running WinZip from VB is something I have been looking for for some time.
'
The UnZip portion, however, unpacks the entire .Zip library. DO you know of a way to unpack just one file?

Thanks in advance,


John G

[Iouri]

'Here all the options for extracting files


Extracting Files:
'=========
The command format is:
winzip[32].exe -e [options] filename[.zip] directory
where:
-e Is required.
options
-o and -j stand For "Overwrite existing files without prompting" and
"Junk pathnames", respectively. Unless -j is specified, directory
information is used.
-s allows specification of a password. The password can be enclosed
In quotes, For example, -s"Secret Password". Note that passwords are
case-sensitive.
filename.zip
Specifies the name of the ZIP involved. Be sure To specify the full
filename (including the directory).
directory
Is the name of the directory to which the files are extracted. If the
directory does Not exist it is created.
Notes:
* VERY IMPORTANT: Always specify complete filenames, including the full
path name and drive letter, For all file IDs.
* To run WinZip in a minimized inactive icon use the "-min" option.
When specified this option must be the first option.
* Only operations involving the built-in zip and unzip are supported.
* Enclose Long filenames on the command line in quotes.
* NO leading or trailing blanks, or blank lines For readability, are
allowed In list ("@") files.
* The action and Each option on the command line must be separated
from the others by at least one space.
* WinZip can be used To compress files With cc:Mail . Change the
compress= line in the [cc:Mail] section of the appropriate WMAIL.INI
files To specify the full path For WinZip followed by "-a %1 @%2".


For example, If WinZip is installed in your c:\winzip directory,
specify
compress=c:\winzip\winzip.exe -a %1 @%2



Iouri Boutchkine
iouri@hotsheet.com