IEC.CPP

//********************************************************************** 
// File name: IEC.CPP 
// 
//    Implementation file for the CExternalConnection Class 
// 
// Functions: 
// 
//    See iec.h for a list of member functions. 
// 
// Copyright 1993 - 1998 Microsoft Corporation. All rights reserved. 
//********************************************************************** 
 
#include "pre.h" 
#include "obj.h" 
#include "iec.h" 
#include "app.h" 
#include "doc.h" 
 
 
//********************************************************************** 
// 
// CExternalConnection::QueryInterface 
// 
// Purpose: 
// 
// 
// Parameters: 
// 
//      REFIID riid         -   Interface being queried for. 
// 
//      LPVOID FAR *ppvObj  -   Out pointer for the interface. 
// 
// Return Value: 
// 
//      S_OK            - Success 
//      E_NOINTERFACE   - Failure 
// 
// Function Calls: 
//      Function                    Location 
// 
//      CSimpSvrObj::QueryInterface OBJ.CPP 
// 
// Comments: 
// 
// 
//******************************************************************** 
 
STDMETHODIMP CExternalConnection::QueryInterface (REFIID riid, LPVOID FAR* ppvObj) 
{ 
OutputDebugString("In CExternalConnection::QueryInterface\r\n"); 
 
return m_lpObj->QueryInterface(riid, ppvObj); 
} 
 
 
//********************************************************************** 
// 
// CExternalConnection::AddRef 
// 
// Purpose: 
// 
//      Increments the reference count on CExternalConnection and the "object" 
//      object. 
// 
// Parameters: 
// 
//      None 
// 
// Return Value: 
// 
//      The Reference count on the Object. 
// 
// Function Calls: 
//      Function                    Location 
// 
//      OuputDebugString            Windows API 
//      CSimpSvrObj::AddRef         OBJ.CPP 
// 
// Comments: 
// 
// 
//******************************************************************** 
 
STDMETHODIMP_(ULONG) CExternalConnection::AddRef () 
{ 
OutputDebugString("In CExternalConnection::AddRef\r\n"); 
++m_nCount; 
return m_lpObj->AddRef(); 
}; 
 
//********************************************************************** 
// 
// CExternalConnection::Release 
// 
// Purpose: 
// 
//      Decrements the reference count of COleObject and the 
//      "object" object. 
// 
// Parameters: 
// 
//      None 
// 
// Return Value: 
// 
//      The new reference count 
// 
// Function Calls: 
//      Function                    Location 
// 
//      OutputDebugString           Windows API 
//      CSimpSvrObj::Release        OBJ.CPP 
// 
// Comments: 
// 
// 
//******************************************************************** 
 
 
STDMETHODIMP_(ULONG) CExternalConnection::Release () 
{ 
OutputDebugString("In CExternalConnection::Release\r\n"); 
--m_nCount; 
return m_lpObj->Release(); 
}; 
 
 
 
//********************************************************************** 
// 
// CExternalConnection::AddConnection 
// 
// Purpose: 
// 
//      Called when another connection is made to the object. 
// 
// Parameters: 
// 
//      DWORD extconn   -   Type of connection 
// 
//      DWORD reserved  -   Reserved 
// 
// Return Value: 
// 
//      Strong connection count 
// 
// Function Calls: 
//      Function                    Location 
// 
//      OutputDebugString           Windows API 
// 
// Comments: 
// 
// 
//******************************************************************** 
 
STDMETHODIMP_(DWORD) CExternalConnection::AddConnection (DWORD extconn, DWORD reserved) 
{ 
OutputDebugString("In CExternalConnection::AddConnection\r\n"); 
 
if (extconn & EXTCONN_STRONG) 
return ++m_dwStrong; 
 
return 0; 
} 
 
//********************************************************************** 
// 
// CExternalConnection::ReleaseConnection 
// 
// Purpose: 
// 
//      Called when a connection to the object is released. 
// 
// Parameters: 
// 
//      DWORD extconn               - Type of Connection 
// 
//      DWORD reserved              - Reserved 
// 
//      BOOL fLastReleaseCloses     - Close flag 
// 
// Return Value: 
// 
//      The new reference count 
// 
// Function Calls: 
//      Function                    Location 
// 
//      OutputDebugString           Windows API 
//      COleObject::Close           IOO.CPP 
// 
// Comments: 
// 
// 
//******************************************************************** 
 
STDMETHODIMP_(DWORD) CExternalConnection::ReleaseConnection (DWORD extconn, DWORD reserved, BOOL fLastReleaseCloses) 
{ 
OutputDebugString("In CExternalConnection::ReleaseConnection\r\n"); 
 
if (extconn & EXTCONN_STRONG) 
{ 
DWORD dwSave = --m_dwStrong; 
 
if (!m_dwStrong && fLastReleaseCloses) 
m_lpObj->m_OleObject.Close(OLECLOSE_SAVEIFDIRTY); 
 
return dwSave; 
} 
return 0; 
}