C++ dll for COM Help

[russgreen]

I am a VB.NET programmer and really no very little about C++. However, I have a lot of code written in C++ and I want to be able to use it in a VB.NET app I am working on.

I have setup a win32 dll project in VC++.NET (2005 express beta), I have added all the .h files to the project and it compiles with success.

I now want to be able to reference this dll into my VB.NET app as a COM or ActiveX dll. What do I need to do to the C++ project to enable this?

I currently haven't coded the functions that I want to expose to my VB.NET app other than a simple test function:

int _stdcall ReportVersion() {
return 1;
}

Please help.

Regards,
Russ

http://www.learnvisualstudio.net?referedby=38523

 

[russgreen]

I should have said...

I would like to avoid using a def file as I don't really want to declare all the functions in the dll before using them.

Thanks

 

[teriviret]

A COM or ActiveX (really the same thing anyway) DLL does not expose individual functions like your ReportVersion function. Instead, you make COM objects and implement the standard COM DLL functions so that apps can use COM to load your DLL and create instances of your COM objects.

The standard COM DLL functions (look them up in MSDN) are:

DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer