Importing DLL classes to VB

[phucket_20]

Hi, I hope someone knows how to do this because I can't seem to figure it out. I've written a DLL in C++ which contains a class I want to use in VB. Importing functions from a DLL is easy.. but I can't figure out how to import a class.

I am exporting my class from my DLL as such:

class __declspec(dllexport) TestClass {
public:
int x;
};

Notice the "__declspec(dllexport)" flag so i am NOT working with any DEF files or anything like that. How may I instantiate a TestClass object in my VB app?

Thanks in advance.

[Joacim Andersson]

When it comes to classes VB can only handle classes in COM objects.
What you have to do is set a reference to the dll and instanciate an object in the normal way.

Private obj As ClassName
Private Sub Form_Load()
    Set obj = New ClassName
End Sub

Best regards

[phucket_20]

thanks. ok.. so i should reference it in my com object and instantiate the class in my vb prog like you've shown me. Got it, but how can i reference the class in my C++ DLL from my COM object? Do you know what the line of code would look like?

Thank you very much for your kind help.

[Joacim Andersson]

Sorry I wasn't very clear. VB can only use classes if the classes themself has a COM interface.
You can't use export classes in VB.