CPROV.CPP

/*++ 
 
Copyright (c) 1996 Microsoft Corporation 
 
Module Name: 
 
    CProv.cpp 
 
Abstract: 
 
    ADsSampleDS Provider Object 
 
Author: 
 
Environment: 
 
    User mode 
 
Revision History : 
 
--*/ 
#include "adssmp.h" 
#pragma hdrstop 
 
CSampleDSProvider::CSampleDSProvider() 
{ 
 
} 
 
HRESULT 
CSampleDSProvider::Create(CSampleDSProvider FAR * FAR * ppProvider) 
{ 
    CSampleDSProvider FAR * pProvider = NULL; 
    HRESULT hr = S_OK; 
 
    //Create the Provider Object 
 
    pProvider = new CSampleDSProvider(); 
    if (pProvider == NULL) { 
        RRETURN(ResultFromScode(E_OUTOFMEMORY)); 
    } 
 
    if (FAILED(hr)) { 
        delete pProvider; 
        RRETURN(hr); 
    } 
 
 
    *ppProvider = pProvider; 
    RRETURN(hr); 
} 
 
CSampleDSProvider::~CSampleDSProvider( ) 
{ 
    ENLIST_TRACKING(CSampleDSProvider); 
} 
 
STDMETHODIMP 
CSampleDSProvider::QueryInterface(REFIID iid, LPVOID FAR* ppv) 
{ 
    if (IsEqualIID(iid, IID_IUnknown)) 
    { 
        *ppv = this; 
    } 
    else if (IsEqualIID(iid, IID_IParseDisplayName)) 
    { 
        *ppv = (IADs FAR *) this; 
    } 
    else 
    { 
        *ppv = NULL; 
        return E_NOINTERFACE; 
    } 
    AddRef(); 
    return NOERROR; 
} 
 
STDMETHODIMP 
CSampleDSProvider::ParseDisplayName(IBindCtx* pbc, WCHAR* szDisplayName, ULONG* pchEaten, IMoniker** ppmk) 
{ 
    HRESULT hr; 
 
    *ppmk = NULL; 
 
    if (pchEaten != NULL){ 
        *pchEaten = 0; 
    } 
 
    hr = ResolvePathName( 
                pbc, 
                szDisplayName, 
                pchEaten, 
                ppmk 
                ); 
 
    RRETURN(hr); 
} 
 
HRESULT 
CSampleDSProvider::ResolvePathName(IBindCtx* pbc, 
                WCHAR* szDisplayName, 
                ULONG* pchEaten, 
                IMoniker** ppmk 
                ) 
{ 
    HRESULT hr; 
    LPUNKNOWN pUnknown = NULL; 
 
    *pchEaten = 0; 
    hr = GetObject(szDisplayName, (LPVOID *)&pUnknown); 
    BAIL_IF_ERROR(hr); 
 
    hr = CreatePointerMoniker(pUnknown, ppmk); 
    BAIL_IF_ERROR(hr); 
 
    *pchEaten += wcslen(szDisplayName); 
 
cleanup: 
 
    if (pUnknown) { 
        pUnknown->Release(); 
    } 
 
    RRETURN (hr); 
}