DLL Question

Hello everyone, got another question concerning DLLs.

First, I found a code to check if an activeX object is registered or not, Im not sure if its the best method to check or not. But this is the code:

VB Code:

Public Function IsRegistered(ByVal class As String) As Boolean
On Error GoTo NotRegistered
Dim obj     As Object
 
    Set obj = CreateObject(class)
    IsRegistered = True
    Set obj = Nothing
    Exit Function
 
NotRegistered:
    IsRegistered = False
End Function

This works fine. But I wanted to know with a function like CreateObject, are you able to find out where the object your trying to load is located on the computer?

Meaning I have my dll at C:\Folder1\test\MyLibrary.dll

I use that to check it by doing:

IsRegistered(MyLibrary.Check)

Check being a class file within the DLL. That would return true if it has been registered before.

Im wonder if, with CreateObject, you can find the path of where the file is located, as well as get the version of the file.

Thanks :)

- Wiccaan

One problem with your code is that after you create the object you never destroy it. Create Object will not tell you where the file is located. You need to check the registry.

Quote:

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Originally Posted by randem

One problem with your code is that after you create the object you never destroy it. Create Object will not tell you where the file is located. You need to check the registry.

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Ah I missed the Set obj = Nothing, sorry about that.

Do you have any examples of how to read the registry for a certain DLL? Also, Ive noticed that in the registry, it saves all the ActiveX components as Version 1.0. Which is.. well.. incorrect. Any idea's about that too?

I was going to use the TLBINF32.DLL functions to do this but it also has the problem of showing the version as 1.0 only. Even if the version is set to like 1.5.0.68 or something.

Thanks for the reply.

- Wiccaan

You can look in my signature for Free VB Source Code and find the project Enumerate thru the Registry. You can use that for a start.

I decided to just have it write the value itself and then just check it each time the program is loaded. I added some error checking and such as well so its working flawlessly :)

Thanks for the help though.