SINK.CPP

/* 
 * SINK.CPP 
 * 
 * Implementation of a sink with the IDuckEvents interface. 
 * 
 * Copyright (c)1993-1995 Microsoft Corporation, All Rights Reserved 
 * 
 * Kraig Brockschmidt, Microsoft 
 * Internet  :  kraigb@microsoft.com 
 * Compuserve:  >INTERNET:kraigb@microsoft.com 
 */ 
 
 
#include "connect.h" 
 
 
/* 
 * CDuckEvents::CDuckEvents 
 * CDuckEvents::~CDuckEvents 
 * 
 * Parameters (Constructor): 
 *  pApp            PAPP to the app object. 
 *  uID             UINT identifier for this sink. 
 */ 
 
CDuckEvents::CDuckEvents(PAPP pApp, UINT uID) 
    { 
    m_cRef=0; 
    m_pApp=pApp;    //No AddRef needed, we're nested 
    m_uID=uID; 
    m_dwCookie=0; 
    return; 
    } 
 
CDuckEvents::~CDuckEvents(void) 
    { 
    return; 
    } 
 
 
 
/* 
 * CDuckEvents::QueryInterface 
 * CDuckEvents::AddRef 
 * CDuckEvents::Release 
 * 
 * Purpose: 
 *  Non-delegating IUnknown members for CDuckEvents. 
 */ 
 
STDMETHODIMP CDuckEvents::QueryInterface(REFIID riid 
    , LPVOID *ppv) 
    { 
    *ppv=NULL; 
 
    if (IID_IUnknown==riid || IID_IDuckEvents==riid) 
        *ppv=this; 
 
    if (NULL!=*ppv) 
        { 
        ((LPUNKNOWN)*ppv)->AddRef(); 
        return NOERROR; 
        } 
 
    return ResultFromScode(E_NOINTERFACE); 
    } 
 
STDMETHODIMP_(ULONG) CDuckEvents::AddRef(void) 
    { 
    return ++m_cRef; 
    } 
 
STDMETHODIMP_(ULONG) CDuckEvents::Release(void) 
    { 
    if (0!=--m_cRef) 
        return m_cRef; 
 
    delete this; 
    return 0; 
    } 
 
 
 
/* 
 * CDuckEvents::Quack 
 * 
 * Purpose: 
 *  Event handler for Quacks 
 */ 
 
STDMETHODIMP CDuckEvents::Quack(void) 
    { 
    TCHAR       szTemp[100]; 
 
    wsprintf(szTemp, TEXT("Sink #%u received Quack"), m_uID+1); 
    m_pApp->Message(szTemp); 
 
   #ifdef WIN32 
    PlaySound(TEXT("quack.wav"), NULL, SND_SYNC); 
   #endif 
 
    return NOERROR; 
    } 
 
 
 
/* 
 * CDuckEvents::Flap 
 * 
 * Purpose: 
 *  Event handler for Flapping 
 */ 
 
STDMETHODIMP CDuckEvents::Flap(void) 
    { 
    TCHAR       szTemp[100]; 
 
    wsprintf(szTemp, TEXT("Sink #%u received Flap"), m_uID+1); 
    m_pApp->Message(szTemp); 
 
   #ifdef WIN32 
    PlaySound(TEXT("flap.wav"), NULL, SND_SYNC); 
   #endif 
 
    return NOERROR; 
    } 
 
 
 
/* 
 * CDuckEvents::Paddle 
 * 
 * Purpose: 
 *  Event handler for Paddling 
 */ 
 
STDMETHODIMP CDuckEvents::Paddle(void) 
    { 
    TCHAR       szTemp[100]; 
 
    wsprintf(szTemp, TEXT("Sink #%u received Paddle"), m_uID+1); 
    m_pApp->Message(szTemp); 
 
   #ifdef WIN32 
    PlaySound(TEXT("paddle.wav"), NULL, SND_SYNC); 
   #endif 
 
    return NOERROR; 
    }