自学教程：C++ CreateBindCtx函数代码示例

/****************************************************************************** *        FileMoniker_IsEqual */static HRESULT WINAPIFileMonikerImpl_IsEqual(IMoniker* iface,IMoniker* pmkOtherMoniker){    FileMonikerImpl *This = impl_from_IMoniker(iface);    CLSID clsid;    LPOLESTR filePath;    IBindCtx* bind;    HRESULT res;    TRACE("(%p,%p)/n",iface,pmkOtherMoniker);    if (pmkOtherMoniker==NULL)        return S_FALSE;    IMoniker_GetClassID(pmkOtherMoniker,&clsid);    if (!IsEqualCLSID(&clsid,&CLSID_FileMoniker))        return S_FALSE;    res = CreateBindCtx(0,&bind);    if (FAILED(res)) return res;    res = S_FALSE;    if (SUCCEEDED(IMoniker_GetDisplayName(pmkOtherMoniker,bind,NULL,&filePath))) {	if (!lstrcmpiW(filePath, This->filePathName))            res = S_OK;	CoTaskMemFree(filePath);    }    IBindCtx_Release(bind);    return res;}

int BookServerTest::createFileMoniker(){	ComPtr<IMoniker> moniker;	auto hr = CreateFileMoniker(kFileName, &moniker);	if (FAILED(hr)) {		return -1;	}	IBindCtx* pbc;	CreateBindCtx(0, &pbc);	ComPtr<IBook> book;	hr = moniker->BindToObject(pbc, NULL, IID_IBook, (void**)&book);	if (FAILED(hr)) {		return -1;	}	ComPtr<IStorage> pStorage;	ComPtr<IStream> pStream;	hr = StgCreateStorageEx(kMonikerFileName, STGM_WRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE,		STGFMT_STORAGE, 0, NULL, 0, IID_IStorage, (void**)&pStorage);	if (FAILED(hr))		return hr;	hr = pStorage->CreateStream(kStreamName, STGM_WRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE,		0, 0, &pStream);	if (FAILED(hr))		return hr;	OleSaveToStream(moniker, pStream);	return 0;}

HRESULT CDuiAxContainer::MonikerBindToStorage(IMoniker *pMk, IBindCtx *pBC,                                IBindStatusCallback *pBSC, REFIID riid, void **ppvObj){    HRESULT hr = E_FAIL;    CDuiComPtr<IBindCtx> pBCCtx = pBC;    if (pBCCtx == NULL)    {        // creates it if not present        hr = CreateBindCtx(0, &pBCCtx);    }    if ( pBCCtx != NULL )    {        if ( pBSC != NULL )        {          typedef HRESULT (WINAPI* pfnRegisterBindStatusCallback)( IBindCtx *pbc,IBindStatusCallback *pbsc,IBindStatusCallback **ppbscPrevious,DWORD dwReserved);          HMODULE urlmon = ::GetModuleHandleA("urlmon.dll");          if(!urlmon)            urlmon = ::LoadLibraryA("urlmon.dll");          pfnRegisterBindStatusCallback OrigRegisterBindStatusCallback = (pfnRegisterBindStatusCallback)::GetProcAddress(urlmon,"RegisterBindStatusCallback");          hr = OrigRegisterBindStatusCallback(pBCCtx, pBSC, NULL, 0);        }        hr = pMk->BindToStorage(pBCCtx, NULL, riid, ppvObj);    }    return hr;}

/****************************************************************************** *        ItemMoniker_IsEqual ******************************************************************************/static HRESULT WINAPI ItemMonikerImpl_IsEqual(IMoniker* iface,IMoniker* pmkOtherMoniker){    CLSID clsid;    LPOLESTR dispName1,dispName2;    IBindCtx* bind;    HRESULT res = S_FALSE;    TRACE("(%p,%p)/n",iface,pmkOtherMoniker);    if (!pmkOtherMoniker) return S_FALSE;    /* check if both are ItemMoniker */    if(FAILED (IMoniker_GetClassID(pmkOtherMoniker,&clsid))) return S_FALSE;    if(!IsEqualCLSID(&clsid,&CLSID_ItemMoniker)) return S_FALSE;    /* check if both displaynames are the same */    if(SUCCEEDED ((res = CreateBindCtx(0,&bind)))) {        if(SUCCEEDED (IMoniker_GetDisplayName(iface,bind,NULL,&dispName1))) {            if(SUCCEEDED (IMoniker_GetDisplayName(pmkOtherMoniker,bind,NULL,&dispName2))) {                if(lstrcmpW(dispName1,dispName2)==0) res = S_OK;                CoTaskMemFree(dispName2);            }            CoTaskMemFree(dispName1);        }    }    return res;}

void CMFCBindCntrItem::LoadFromMoniker(LPUNKNOWN pUnk, OLECHAR* szwName){	HRESULT hr;	// Ask the system for a URL Moniker	IMoniker* pIMoniker;	hr = CreateURLMoniker(NULL, (LPWSTR)szwName, &pIMoniker);	if ( SUCCEEDED(hr) )	{		// Get the IPersistMoniker interface		IPersistMoniker* pPMk;		hr = pUnk->QueryInterface(								IID_IPersistMoniker,								(void **)&pPMk);		if ( SUCCEEDED(hr) )		{				// note: do not register our BSC when calling IPM::Load directly			IBindCtx *pBCtx;			hr = CreateBindCtx(0, &pBCtx);			if ( SUCCEEDED(hr) )			{				// Call Load on the IPersistMoniker				hr = pPMk->Load(FALSE, pIMoniker, pBCtx, STGM_READ);					pBCtx->Release();			}			pPMk->Release();		}		pIMoniker->Release( );	}}

/* Newer COM libraries supply the functionality of   bindObject() via CoGetObject(), but to avoid depending   on that being around, we stick with our own implementation.*/HRESULT bindObject( const WCHAR* name, IID* iid, void** unk ){  HRESULT hr;  IBindCtx    *bc;  IMoniker    *mk;  ULONG        count;  if (!unk) return E_POINTER;       else *unk = NULL;  if (!iid) return E_POINTER;  bc = NULL;  mk = NULL;  hr = CreateBindCtx(0, &bc);  if (FAILED(hr)) return hr;  hr = MkParseDisplayName(bc, name, &count, &mk);  if (FAILED(hr)) { IUnknown_Release(bc); return hr; }  hr = IMoniker_BindToObject( mk, bc, NULL, iid, unk );  IUnknown_Release(mk);  IUnknown_Release(bc);  return hr;}

/*********************************************************************** *             HlinkResolveMonikerForData ([email
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