spaces~1.cpp

This companion disc contains the source code for the sample programs presented in INSIDE VISUAL C++

// Spaceship.cpp : implementation file
//

#include "stdafx.h"
#include "ex23b.h"
#include "Interface.h"
#include "Spaceship.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

//////////////////////////////////////////////////////////////////////
// CSpaceship

// {692D03A4-C689-11CE-B337-88EA36DE9E4E}
static const IID IID_IMotion =
{ 0x692d03a4, 0xc689, 0x11ce,
    { 0xb3, 0x37, 0x88, 0xea, 0x36, 0xde, 0x9e, 0x4e } };

// {692D03A5-C689-11CE-B337-88EA36DE9E4E}
static const IID IID_IVisual =
{ 0x692d03a5, 0xc689, 0x11ce,
    { 0xb3, 0x37, 0x88, 0xea, 0x36, 0xde, 0x9e, 0x4e } };

IMPLEMENT_DYNCREATE(CSpaceship, CCmdTarget)

CSpaceship::CSpaceship()
{
    TRACE("CSpaceship ctor\n");
    m_nPosition = 100;
    m_nAcceleration = 101;
    m_nColor = 102;
    // To keep the application running as long as an OLE automation
    //   object is active, the constructor calls AfxOleLockApp.
    
    AfxOleLockApp();
}

CSpaceship::~CSpaceship()
{
    TRACE("CSpaceship dtor\n");
    // To terminate the application when all objects created with
    //   OLE automation, the destructor calls AfxOleUnlockApp.
    
    AfxOleUnlockApp();
}

void CSpaceship::OnFinalRelease()
{
    // When the last reference for an automation object is released
    //   OnFinalRelease is called. This implementation deletes the 
    //   object. Add additional cleanup required for your object before
    //   deleting it from memory.

    delete this;
}


BEGIN_MESSAGE_MAP(CSpaceship, CCmdTarget)
    //{{AFX_MSG_MAP(CSpaceship)
    // NOTE - the ClassWizard will add and remove mapping macros here.
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

BEGIN_INTERFACE_MAP(CSpaceship, CCmdTarget)
    INTERFACE_PART(CSpaceship, IID_IMotion, Motion)
    INTERFACE_PART(CSpaceship, IID_IVisual, Visual)
END_INTERFACE_MAP()

// {692D03A3-C689-11CE-B337-88EA36DE9E4E}
IMPLEMENT_OLECREATE(CSpaceship, "Spaceship", 0x692d03a3, 0xc689,
                    0x11ce, 0xb3, 0x37, 0x88, 0xea, 0x36, 0xde,
                    0x9e, 0x4e)

STDMETHODIMP_(ULONG) CSpaceship::XMotion::AddRef()
{
    TRACE("CSpaceship::XMotion::AddRef\n");
    METHOD_PROLOGUE(CSpaceship, Motion)
    return pThis->ExternalAddRef();
}

STDMETHODIMP_(ULONG) CSpaceship::XMotion::Release()
{
    TRACE("CSpaceship::XMotion::Release\n");
    METHOD_PROLOGUE(CSpaceship, Motion)
    return pThis->ExternalRelease();
}

STDMETHODIMP CSpaceship::XMotion::QueryInterface(
    REFIID iid, LPVOID* ppvObj)
{
    ITrace(iid, "CSpaceship::XMotion::QueryInterface");
    METHOD_PROLOGUE(CSpaceship, Motion)
    return pThis->ExternalQueryInterface(&iid, ppvObj);
}

STDMETHODIMP_(void) CSpaceship::XMotion::Fly()
{
    TRACE("CSpaceship::XMotion::Fly\n");
    METHOD_PROLOGUE(CSpaceship, Motion)
    TRACE("m_nPosition = %d\n", pThis->m_nPosition);
    TRACE("m_nAcceleration = %d\n", pThis->m_nAcceleration);
    return;
}

STDMETHODIMP_(int&) CSpaceship::XMotion::GetPosition()
{
    TRACE("CSpaceship::XMotion::GetPosition\n");
    METHOD_PROLOGUE(CSpaceship, Motion)
    TRACE("m_nPosition = %d\n", pThis->m_nPosition);
    TRACE("m_nAcceleration = %d\n", pThis->m_nAcceleration);
    return pThis->m_nPosition;
}

//////////////////////////////////////////////////////////////////////
STDMETHODIMP_(ULONG) CSpaceship::XVisual::AddRef()
{
    TRACE("CSpaceship::XVisual::AddRef\n");
    METHOD_PROLOGUE(CSpaceship, Visual)
    return pThis->ExternalAddRef();
}

STDMETHODIMP_(ULONG) CSpaceship::XVisual::Release()
{
    TRACE("CSpaceship::XVisual::Release\n");
    METHOD_PROLOGUE(CSpaceship, Visual)
    return pThis->ExternalRelease();
}

STDMETHODIMP CSpaceship::XVisual::QueryInterface(
    REFIID iid, LPVOID* ppvObj)
{
    ITrace(iid, "CSpaceship::XVisual::QueryInterface");
    METHOD_PROLOGUE(CSpaceship, Visual)
    return pThis->ExternalQueryInterface(&iid, ppvObj);
}

STDMETHODIMP_(void) CSpaceship::XVisual::Display()
{
    TRACE("CSpaceship::XVisual::Display\n");
    METHOD_PROLOGUE(CSpaceship, Visual)
    TRACE("m_nPosition = %d\n", pThis->m_nPosition);
    TRACE("m_nColor = %d\n", pThis->m_nColor);
}

//////////////////////////////////////////////////////////////////////
void ITrace(REFIID iid, const char* str)
{
    OLECHAR* lpszIID;
    ::StringFromIID(iid, &lpszIID);
    CString strTemp = (LPCWSTR) lpszIID;
    TRACE("%s - %s\n", (const char*) strTemp, (const char*) str);
    AfxFreeTaskMem(lpszIID);
}

//////////////////////////////////////////////////////////////////////
// CSpaceship message handlers