Question

I have a native class which requires a function pointer in the constructor. I have tried searching the forums, but couldnt quite find what I was looking for.

The native class looks like this:

class NativeClass{
    NativeClass(std::string(*callback)(std::string args)){
    //native code goes here
    }
};

What is the best way of passing a delegate? Any help will be appreciated.

Answer 1

You need to use Marshal.GetFunctionPointerForDelegate() to achieve this.

Note that this will return a function pointer that uses the stdcall calling convention. You can specify a different calling convention by using the UnmanagedFunctionPointer attribute on your delegate declaration.