C++ external reference to class inside dll

Hey guys! So if anyone's been keeping up to date with my thread they'll know that I recently had a major breakthrough.

My thing is this,

Early on I declare a function pointer of type unsigned __int32 with __cdecl calling convention
** I used LoadLibrary btw**
Then later on I initialize it to GetProcAddress of one of the functions inside of LagerPacket.dll
And this works just fine. I can create a void pointer and assign it to the & of a string which allows me to successfully call the function and return an unsigned __int32.

However, that's just for a plain function. I need to reference a class inside the DLL from my main program. I can't seem to do it. Yes, I've tried Google and every possible keyword combination I could think of, and it's possible that I don't know what to ask so I'm not getting the result I need.

This is my problem:

There's a class called ILagerPacket (there's other classes too but I just need to learn how to access one obviously)

So inside IDA I get this:

ILagerPacket::ILagerPacket(void)
ILagerPacket::~ILagerPacket(void)
ILagerPacket::ILagerPacket(ILagerPacket const &)

If I try referring to the constructor, it fails, same for the destructor. However I'm not sure what the third reference is. Another constructor?

Also, if a constructor isn't a function (which I think it is??) then how do I reference it so I can call the constructor?

IDA disassembly view of ILagerPacket::ILagerPacket(void)
IDA disassembly view of ILagerPacket::~ILagerPacket(void)
IDA disassembly view of ILagerPacket::ILagerPacket(ILagerPacket const &)
Funny enough, there's a function inside of class CLpqPatcher called CreatePatchFile(void). I can reference it and call it, however I haven't figured out the proper parameters yet so it crashes on me. But I can't reference the constructor.

Help please...