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RTCEvents.cpp
资源名称：Visual C++视频音频开发实用工程案例精选.rar　[点击查看]
上传用户：tuheem
上传日期：2007-05-01
资源大小：21889k
文件大小：2k
源码类别：

多媒体编程

开发平台：

Visual C++

RTCEvents.cpp：源码内容
  2. #include "stdafx.h"
  3. #include "AVDConf.h"
  4. #include "RTCEvents.h"
  5. #include "rtccore_i.c"
  6. #include "rtccore.h"
  7. #include "defines.h"
  9. #ifdef _DEBUG
  10. #undef THIS_FILE
  11. static char THIS_FILE[]=__FILE__;
  12. #define new DEBUG_NEW
  13. #endif
  17. CRTCEvents::CRTCEvents()
  18. {
  19. m_dwRefCount = 0;
  20. m_dwCookie = 0;
  21. m_hWnd = NULL;
  22. }
  24. CRTCEvents::~CRTCEvents()
  25. {
  27. }
  29. ULONG STDMETHODCALLTYPE CRTCEvents::AddRef()
  30. {
  31.     m_dwRefCount++;
  32.     return m_dwRefCount;
  33. }
  36. ULONG STDMETHODCALLTYPE CRTCEvents::Release()
  37. {
  38.     m_dwRefCount--;
  40.     if ( 0 == m_dwRefCount)
  41.     {
  42.         delete this;
  43.     }
  45.     return m_dwRefCount;
  46. }
  49. HRESULT STDMETHODCALLTYPE CRTCEvents::QueryInterface(REFIID iid, void **ppvObject)
  50. {
  51.     if (iid == IID_IRTCEventNotification)
  52.     {
  53.         *ppvObject = (void *)this;
  54.         AddRef();
  55.         return S_OK;
  56.     }
  58.     if (iid == IID_IUnknown)
  59.     {
  60.         *ppvObject = (void *)this;
  61.         AddRef();
  62.         return S_OK;
  63.     }
  64. return E_NOINTERFACE;
  65. }
  68. HRESULT CRTCEvents::Advise(IRTCClient *pClient, HWND hWnd)
  69. {
  70. IConnectionPointContainer * pCPC = NULL;
  71. IConnectionPoint * pCP = NULL;
  72.     HRESULT hr;
  74.    
  75. hr = pClient->QueryInterface(IID_IConnectionPointContainer, (void**)&pCPC);
  77. if (SUCCEEDED(hr))
  78.     {
  79.         
  80. hr = pCPC->FindConnectionPoint(IID_IRTCEventNotification, &pCP);
  82.         SAFE_RELEASE(pCPC);
  84.         if (SUCCEEDED(hr))
  85.         {
  86.             
  87.     hr = pCP->Advise(this, &m_dwCookie);
  89.             SAFE_RELEASE(pCP);
  90.         }
  91.     }
  93.    
  94.     m_hWnd = hWnd;
  96. return hr;
  97. }
  100. HRESULT CRTCEvents::Unadvise(IRTCClient *pClient)
  101. {
  102. IConnectionPointContainer * pCPC = NULL;
  103. IConnectionPoint * pCP = NULL;
  104.     HRESULT hr;
  106.     if (m_dwCookie)
  107.     {
  108.         
  109.     hr = pClient->QueryInterface(IID_IConnectionPointContainer, (void**)&pCPC);
  111.     if (SUCCEEDED(hr))
  112.         {
  113.             
  114.     hr = pCPC->FindConnectionPoint(IID_IRTCEventNotification, &pCP);
  116.             SAFE_RELEASE(pCPC);
  118.             if (SUCCEEDED(hr))
  119.             {
  120.                
  121.         hr = pCP->Unadvise(m_dwCookie);
  123.                 SAFE_RELEASE(pCP);
  124.             }
  125.         }
  126.     }
  128. return hr;
  129. }
  132. HRESULT STDMETHODCALLTYPE CRTCEvents::Event(RTC_EVENT enEvent, IDispatch *pDisp)
  133. {
  135.     pDisp->AddRef();
  137.   
  138.     PostMessage( m_hWnd, WM_RTC_EVENT, (WPARAM)enEvent, (LPARAM)pDisp );
  140.     return S_OK;
  141. }