VB DLL calling C++ DLL

[whodaman]

Is there away for VS to do this? I'm assuming it's managed DLL. Isn't this one of .Net's key capabilities?

What I want to do is have a VB DLL that calls functions in a C++ DLL to speed up the code. I've tried setting the project dependcies and a few other things. I'm just lost with ideas now. Does anyone have a clue?

 

[Dimandja]

What you are trying to do is odd for two reasons.

1. Why call the C++ DLL from another DLL, when you can call it directly?

2. If everything is managed code, I don't see how the C++ DLL will run any faster than the VB DLL.

 

[whodaman]

I know it is odd, but

1) I would like to call another DLL because most of the programmers in this project are VB programmers. Thus most of the code will be done in VB. We would still like to have a DLL that is modular enough for other .Net programs to use (thus some VB code should be in a DLL). The core routine that requires speed, will need to be in C++. Which brings to the point 2.

2) I have tested a C++ and VB DLL (both managed) and C++ is 10 times as fast. I really don't understand why myself because it should be the CRL, but that is the case for me.

I've tried registering the COM Interop, but that too doesn't work.

 

[chrissie1]

if its managed you don't need com interop just reference it like you do a vb.net dll and use it. But you need to be sure that its 100% managed and I think that means no pointers in there but I must say I'm not sure about that.

Christiaan Baes
Belgium

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