Using Visual Basic DLLs from Visual C++

[asiceng05]

Hi,

I have spent most of yoday trying figure out how to access my visual basic DLL functions from VC++.

This is what I am trying to achieve;

My colleague has this visual basic application that uses the USB port to control an attached system.

I have written a some C++ code which would be embedded on the system and also can be tested via the USB control. Importantly, it requires some of the visual basic functions to operate and so I can't compile my code without these functions!

So I want to interface this with his visual basic.

So far, I have isolated the required functions and put them in a VB Class library dll as well as an .exe application.

But I am unable to access this from VC++.

Is there any other less painful way to use VB functions in VC++?

I would be really grateful for any help.

thanks

asiceng05

 

[LazyMe]

From your post I can't see exactly what you've tried so far. Looks like you only isolated the functions in VB, right? Nothing yet from within C++?

Therefore; you might already know this..... but anyway:
VB Dlls are COM dlls; you'll have to import the typlib in your C++ project and access them thru COM....

Greetings,
Rick

 

[asiceng05]

Thanks LazyMe,

that was quite helpful. Well it was a hint that I think has led to the soulution!!