calling MFC from managed C++

[jbmeeh]

I have defined a managed C++ project to call into an unmanaged MFC project. The MFC project builds successfully. However, the build of the managed project fails because the linker cannot resolve the external symbols for the methods defined in the unmanaged class. Attached is the class definition for the managed class

public __gc class MTracke

public
MTracker(Control* pControl,Control* cControl

m_CTracker = new CComTrackerApp()
IntPtr pPtr = pControl->Handle
IntPtr cPtr = cControl->Handle
HWND pHwnd = (HWND)pPtr.ToPointer()
HWND cHwnd = (HWND)cPtr.ToPointer()
m_CTracker->Create(pHwnd,cHwnd)

protected
void Dispose(bool b

MTracker::Dispose(b)

if (m_CTracker != NULL

delete m_CTracker
m_CTracker = NULL

}
private
CComTrackerApp* m_CTracker
}

The CCOMTrackerAPP class is defined in the MFC project. The linker cannot resolve the addresses for CComTracker::CComTracker() or CComTracker::Create(HWND pHwnd,HWND cHwnd). Any suggestions would be appreciated.