CVIDEO.CPP

//**************************************************************************** 
//  Module:     NMUI.EXE      
//  File:       CVIDEO.CPP 
//  Content:    Video Channel Routines 
//               
// 
//  Copyright (c) Microsoft Corporation 1995-1997 
// 
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF  
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO  
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A  
// PARTICULAR PURPOSE. 
//**************************************************************************** 
 
#include "precomp.h" 
 
 
//**************************************************************************** 
// 
// CLASS CVideoNotify 
// 
//**************************************************************************** 
 
CVideoNotify::CVideoNotify(PFNSTATECHANGE pfnStateChange, PFNPROPERTYCHANGE pfnPropertyChange, DWORD dwParam) : RefCount(), CNotify() 
{ 
OBJECT_MSG("CVideoNotify created"); 
 
m_pfnStateChange = pfnStateChange; 
m_pfnPropertyChange = pfnPropertyChange; 
m_dwParam = dwParam; 
} 
 
CVideoNotify::~CVideoNotify() 
{ 
OBJECT_MSG("CDataNotify destroyed"); 
} 
 
 
//**************************************************************************** 
// 
// Methods from IUnknown 
// 
//**************************************************************************** 
 
ULONG STDMETHODCALLTYPE CVideoNotify::AddRef(void) 
{ 
return RefCount::AddRef(); 
} 
 
 
ULONG STDMETHODCALLTYPE CVideoNotify::Release(void) 
{ 
return RefCount::Release(); 
} 
 
HRESULT STDMETHODCALLTYPE CVideoNotify::QueryInterface(REFIID riid, PVOID *ppvObject) 
{ 
HRESULT hr = S_OK; 
 
if (riid == IID_IUnknown) 
{ 
*ppvObject = (IUnknown *)this; 
OBJECT_MSG("CVideoNotify::QueryInterface(): Returning IUnknown."); 
} 
else if (riid == IID_INmChannelVideoNotify) 
{ 
*ppvObject = (INmChannelVideoNotify *)this; 
OBJECT_MSG("CVideoNotify::QueryInterface(): Returning INmChannelVideoNotify."); 
} 
else 
{ 
hr = E_NOINTERFACE; 
*ppvObject = NULL; 
OBJECT_MSG("CVideoNotify::QueryInterface(): Called on unknown interface."); 
} 
 
if (S_OK == hr) 
{ 
AddRef(); 
} 
 
return hr; 
} 
 
 
//**************************************************************************** 
// 
// Methods from ICNotify 
// 
//**************************************************************************** 
 
HRESULT STDMETHODCALLTYPE CVideoNotify::Connect(IUnknown *pUnk) 
{ 
return CNotify::Connect(pUnk, IID_INmChannelVideoNotify, (IUnknown *)this); 
} 
 
HRESULT STDMETHODCALLTYPE CVideoNotify::Disconnect(void) 
{ 
return CNotify::Disconnect(); 
} 
 
 
//**************************************************************************** 
// 
// Methods from INmChannelNotify 
// 
//**************************************************************************** 
HRESULT STDMETHODCALLTYPE CVideoNotify::NmUI(CONFN uNotify) 
{ 
NOTIFY_MSG("CVideoNotify::NmUI uNotify=%08X, pChannel=%08X", uNotify, CNotify::GetPunk()); 
return S_OK; 
} 
 
 
HRESULT STDMETHODCALLTYPE CVideoNotify::MemberChanged(NM_MEMBER_NOTIFY uNotify, INmMember *pMember) 
{ 
NOTIFY_MSG("CVideoNotify::MemberChanged uNotify=%08X, pMember=%08X, pChannel=%08X", uNotify, pMember, CNotify::GetPunk()); 
 
PUSER pUser = PUserFromINmMember(pMember); 
if (NULL != pUser) 
{ 
UpdateUserChannel(pUser, (INmChannel *) (CNotify::GetPunk()), uNotify); 
} 
 
return S_OK; 
} 
 
 
//**************************************************************************** 
// 
// Methods from IConfNotify 
// 
//**************************************************************************** 
 
HRESULT STDMETHODCALLTYPE CVideoNotify::StateChanged(NM_VIDEO_STATE uState) 
{ 
NOTIFY_MSG("CVideoNotify::StateChanged uState=%08X, pChannel=%08X", uState, CNotify::GetPunk()); 
if (NULL != m_pfnStateChange) 
{ 
m_pfnStateChange(uState, m_dwParam); 
} 
return S_OK; 
} 
 
 
HRESULT STDMETHODCALLTYPE CVideoNotify::PropertyChanged(DWORD dwReserved) 
{ 
NOTIFY_MSG("CVideoNotify::PropertyChanged dwReserved=%08X, pChannel=%08X", dwReserved, CNotify::GetPunk()); 
if (NULL != m_pfnPropertyChange) 
{ 
m_pfnPropertyChange(dwReserved, m_dwParam); 
} 
return S_OK; 
}