DLL Path

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May 22nd, 2006, 03:45 AM
krtxmrtz

DLL Path

I'd like to write:

Private Declare Sub MySub Lib App.Path & "\Mydll.dll" (MyParam As ...)

rather than

Private Declare Sub MySub Lib "C:\VB\Projects\MyProj\Mydll.dll" (MyParam As ...)

but unfortunately this is not allowed.

Is there any way round or some trick to make the declaration path a relative one? I like to keep the dll in the app (and not in the Windows) directory because I'm often making changes and updates to it.
May 22nd, 2006, 03:49 AM
RobDog888

Re: DLL Path

If your dll is registered then it should not be necessary to declare the path as the default initial location windows looks for files is the applications path. Then in Windows. Then in System32. Basically a shortened enumeration of the locations windows looks.
May 22nd, 2006, 03:55 AM
krtxmrtz

Re: DLL Path

Quote:

Originally Posted by RobDog888

If your dll is registered then it should not be necessary to declare the path as the default initial location windows looks for files is the applications path. Then in Windows. Then in System32. Basically a shortened enumeration of the locations windows looks.

I tried to register it but I got this message:

"...Mydll.dll was loaded but the DllRegisterServer entry point was not found"
May 22nd, 2006, 04:02 AM
RobDog888

Re: DLL Path

Thats a different error then path not found. Did you use VB 6 to write the dll or is it a third party dll? Did you try it with the hard coded path and did it work?

Try using Depends.exe to determine any dependancies that may not exist or ??? if its a third party dll.
May 22nd, 2006, 04:08 AM
Shuja Ali

Re: DLL Path
When you try it with the DLL in the application folder, do you recieve any error.
VB Code:
```
Private Declare Sub MySub Lib "C:\VB\Projects\MyProj\Mydll.dll" (MyParam As ...)
```
If it is a Win32 Standard DLL then it does not need any registration.

It should work even if the DLL is present in the same folder as your EXE.
May 22nd, 2006, 04:10 AM
RobDog888

Re: DLL Path

Yes, thats what I thought that it did look in the application path folder first but it sounds like the error mesage is dll dependant and not a Declare type issue.
May 22nd, 2006, 04:51 AM
krtxmrtz

Re: DLL Path

Quote:

Originally Posted by RobDog888

[color=navy]Thats a different error then path not found. Did you use VB 6 to write the dll or is it a third party dll?

I wrote it in c++

Quote:

Originally Posted by RobDog888

[color=navy]Did you try it with the hard coded path and did it work?]

It did, yes.
May 22nd, 2006, 05:18 AM
Frans C

Re: DLL Path
I believe it is possible to declare it like:
VB Code:
```
Private Declare Sub MySub Lib "Mydll.dll" (MyParam As ...)
```
VB should look in the application path as well.
May 22nd, 2006, 05:33 AM
krtxmrtz

Re: DLL Path

Quote:

Originally Posted by Frans C

VB should look in the application path as well.

It doesn't work either. Btw I've tried in VB6 under Win98.
May 22nd, 2006, 06:16 AM
Frans C

Re: DLL Path

Did you try this in the IDE or with an exe?
If you run the application from the IDE, windows regards the directory where VB6.exe is located as the application directory, and not the directory where your project is located.
May 22nd, 2006, 08:04 AM
krtxmrtz

Re: DLL Path

Quote:

Originally Posted by Frans C

Did you try this in the IDE or with an exe?
If you run the application from the IDE, windows regards the directory where VB6.exe is located as the application directory, and not the directory where your project is located.

You're right, it works after I've compiled it. But it's a nuisance having to cope with this from the IDE, as I'm still developing the project (and will be for quite long, probably) and I work on it from various computers having different pathes.