C++ LPDISPATCH::GetIDsOfNames方法代码示例

void CNetscapeCntrItem::OnActivate()
{
	char * pSource = NULL;
	const char* ptr;
	LPDISPATCH pdisp;
	HRESULT hr;
	int _convert;
	if (m_lpObject->QueryInterface(IID_IDispatch, (void**)&pdisp) == S_OK){
#ifdef XP_WIN32
		LPCOLESTR lpOleStr = T2COLE("SaveAs");
		hr = pdisp->GetIDsOfNames(IID_NULL, (unsigned short **)&lpOleStr, 1, LOCALE_USER_DEFAULT, &m_idSavedAs);
		pdisp->Release();
		if (hr == S_OK)	
			m_bCanSavedByOLE = TRUE;
		else
			m_idSavedAs = DISPID_UNKNOWN;
#else
			m_idSavedAs = DISPID_UNKNOWN;
#endif
	}

	const char* ptr1 = m_csAddress; 
	if (NET_IsLocalFileURL((char*)ptr1)) {
		XP_ConvertUrlToLocalFile(m_csAddress, &pSource);
		m_csDosName = *pSource;  // pick up the drive name.
		m_csDosName += ":";
		m_csDosName += strchr(pSource, '\\');  // pick up the real file name.
		ptr = m_csDosName;	 
		FE_ConvertSpace((char*)ptr);
		XP_FREE(pSource);
	}

	// the object does not support ole automation, try to find out if this is a storagefile, so
	// we can use OLESave().
	if (!m_bCanSavedByOLE) {
#ifdef XP_WIN32		// we will only want to handle saving when the object had storage file.
		int _convert;
		LPCOLESTR lpsz = A2CW(m_csDosName);
		if (StgIsStorageFile(lpsz) == S_OK) 
			m_bCanSavedByOLE = TRUE;
#else                       
		HRESULT sc1 = StgIsStorageFile(m_csDosName);
		if (GetScode(sc1) == S_OK) 
			m_bCanSavedByOLE = TRUE;
#endif
		}

	CGenericView* pView = GetActiveView();
	CFrameGlue *pFrameGlue = pView->GetFrame();
	if(pFrameGlue != NULL)	{
		m_bLocationBarShowing = pFrameGlue->GetChrome()->GetToolbarVisible(ID_LOCATION_TOOLBAR);
	}

	COleClientItem::OnActivate();
}

HRESULT WSAccessor::AutoDispInvoke(LPDISPATCH pdisp, LPOLESTR pwszname, DISPID dspid,
					WORD wflags, DWORD cargs, VARIANT* rgargs, VARIANT* pvtret)
{
    HRESULT    hr;
    DISPID     dspidPut = DISPID_PROPERTYPUT;
    DISPPARAMS dspparm = {NULL, NULL, 0, 0};

	CHECK_NULL_RETURN(pdisp, E_POINTER);

    dspparm.rgvarg = rgargs;
    dspparm.cArgs = cargs;

	if ((wflags & DISPATCH_PROPERTYPUT) || (wflags & DISPATCH_PROPERTYPUTREF))
	{
		dspparm.rgdispidNamedArgs = &dspidPut;
		dspparm.cNamedArgs = 1;
	}

	try
	{
		if (pwszname)
		{
			hr = pdisp->GetIDsOfNames(IID_NULL, &pwszname, 1, LOCALE_USER_DEFAULT, &dspid);
			//RETURN_ON_FAILURE(hr);
			if( FAILED(hr))
			{
				*(_variant_t*)pvtret = L"方法名获取失败，可能拼写错误!";
				return hr;
			}
		}

        hr = pdisp->Invoke(dspid, IID_NULL, LOCALE_USER_DEFAULT,
            (WORD)(DISPATCH_METHOD | wflags), &dspparm, pvtret, NULL, NULL);

    }
    catch(...)
    {
        hr = S_FALSE;
    }

    return hr;
}

HRESULT CMyAddin::GetOutlookApp(IExchExtCallback 		*pmecb,
			     Outlook::_ApplicationPtr 	&rOLAppPtr)
{
   AFX_MANAGE_STATE(AfxGetStaticModuleState());
   try
   {
	  IOutlookExtCallback *pOutlook = NULL;
      HRESULT hRes = pmecb->QueryInterface(IID_IOutlookExtCallback,(void **) &pOutlook);
      if (pOutlook)
      {
         IUnknown *pUnk = NULL;
         pOutlook->GetObject(&pUnk);
         LPDISPATCH lpMyDispatch;
         if (pUnk != NULL)
         {
            hRes = pUnk->QueryInterface(IID_IDispatch, (void **) &lpMyDispatch);
			pUnk->Release();
         }
         if (lpMyDispatch)
         {
            OLECHAR * szApplication = L"Application";
			DISPPARAMS dispparamsNoArgs = {NULL, NULL, 0, 0};
			DISPID dspid;
			VARIANT vtResult;
			lpMyDispatch->GetIDsOfNames(IID_NULL, &szApplication, 1, LOCALE_SYSTEM_DEFAULT, &dspid);
			lpMyDispatch->Invoke(dspid, IID_NULL, LOCALE_SYSTEM_DEFAULT, DISPATCH_METHOD, &dispparamsNoArgs, &vtResult, NULL, NULL);
			lpMyDispatch->Release();

			rOLAppPtr= vtResult.pdispVal;
            return S_OK;
         }
      }
   }
   catch(...)
   {
   }
   return S_FALSE;
}

void CElementPropPage::AddElement()
{
   // Needed for Unicode conversion functions
   USES_CONVERSION;

   // Get the dispatch of the control
   LPDISPATCH lpControl = GetControlDispatch();

   // Update the control using automation calls
   COleDispatchDriver PropDispDriver;
   DISPID dwDispID;

   // Get a Unicode string
   LPCOLESTR lpOleStr = T2COLE(L"AddElement" );

   if (SUCCEEDED( lpControl->GetIDsOfNames(IID_NULL, (LPOLESTR*)&lpOleStr,
                        1, 0, &dwDispID)))
   {
        PropDispDriver.AttachDispatch( lpControl, FALSE);
		PropDispDriver.InvokeHelper( dwDispID, DISPATCH_METHOD, VT_EMPTY, NULL, NULL);
		PropDispDriver.DetachDispatch();
   }
}