// This is the main project file for VC++ application project

// generated using an Application Wizard.

//

// Written by Chris Maunder ([email protected])

// The Code Project, http://www.codeproject.com

#include "stdafx.h"

#using <mscorlib.dll>

using namespace System;

// Declare a new value type (will be allocated on the stack)

__value struct Complex

{

double real;

double imaginary;

virtual String *ToString()

{

return String::Format("{0} + {1}i", real.ToString("N2"),

imaginary.ToString("N2"));

}

};

// This is the entry point for this application

#ifdef _UNICODE

int wmain(void)

#else

int main(void)

#endif

{

// declare and work with a value type

Console::WriteLine("Demonstration of a value type declarion and creation\n");

Complex z;

Console::WriteLine("z is initialized to {0}", z.ToString());

z.real = 1.0;

z.imaginary = -3.1415;

Console::WriteLine("z is now {0}", z.ToString());

// Boxing demonstration

Console::WriteLine("\nDemonstration of boxing\n");

Object* obj = __box(z.real);

Console::WriteLine("The boxed value of z.real is {0}", obj);

// Accessing data fields of a boxed structure

Console::WriteLine("\nDemonstration accessing data fields in a boxed type\n");

__box Complex* pZ = __box(z);

pZ->real = 4;

Console::WriteLine("The boxed value of pZ->real is {0}", pZ->real.ToString());

// Unboxing demonstration

Console::WriteLine("\nDemonstration of unboxing\n");

Complex w = * dynamic_cast<Complex*>(pZ);

Console::WriteLine("The unboxed value of w.real is {0}", w.real.ToString());

Console::Write("Press Enter to continue");

Console::ReadLine();

return 0;

}