//**********************************************************************
// File name: IEC.CPP
//
//    Implementation file for the CExternalConnection Class
//
// Functions:
//
//    See iec.h for a list of member functions.
//
// Copyright (c) 1993 Microsoft Corporation. All rights reserved.
//**********************************************************************

#include "precomp.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(TEXT("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(TEXT("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(TEXT("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(TEXT("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(TEXT("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;
}
