LNK 2001 in C++ .Net

[Michael van Altena]

I'm receiving error LNK 2001 with message
unresolved external symbol "unsigned long __cdecl _exception_code(void)" (?_exception_code@@$$FYAKXZ)
using C++ .Net in Visual Studio .Net 2003. I'm a beginner in C++, and the entire program code is below:

# include <afxwin.h> // contains definitions for core MFC componenents
// including definitions of CWinApp and CFrameWnd

class MyWindow:public CFrameWnd // creates frame window derived from CFrameWnd class
{
public:
MyWindow() // constructor
{
Create(NULL, "My Application Window"); //NULL passes default values of CFrameWnd
MessageBox("Window Created", "CFrameWnd Constructor");
}
};

class MyApp:public CWinApp // define application class derived from CWinApp class
{
public:
BOOL InitInstance() // override InitInstance and define application settings
{
MyWindow *MywindowObject = new MyWindow;
m_pMainWnd = MywindowObject; // m_pMainWnd points to main window, determines lifetime
MywindowObject->ShowWindow(SW_SHOWNORMAL);
return TRUE;
}
};
MyApp MyAppObject; // instantiate application class pointing to MyApp class

The code is copied from "Microsoft C++ .Net Professional Projects" from Premier Press which came out in 2002. Is this a difference between VS 2002 and 2003 ?

Thanks for any assistance,
Michael van Altena