MFC dll export question

[Wings]

Hello,
I'm having a difficult time implementing an MFC dll I have created.
When I attempt to use the dll in another application, I get an unresolved external linker error when I am declaring a instantiation of a new object of the dll type.

//the code is below
CSerialControl *SC = new CSerialControl();
//end code

do I need to export the constructor of the class in the dll? what about the InitInstance function?

Any help to point me in the right direction is appreciated.

Thanks.

 

[Wings]

Ok, I solved this problem to. Kind of. I can build the application fine now, but whenever the code executes, I get an exception.

//This is the code
AFX_MANAGE_STATE(AfxGetStaticModuleState());
CSerialControl SC;
/////

I get an exception on this line of code in the MFC class Afxtls.cpp

ASSERT(m_pSlotData[nSlot].dwFlags & SLOT_USED);

If I just put my dll code in a class and include the class, it works fine but as soon as it goes into a dll I get problems.

Any ideas?