ActiveX控件的MFC设计之旅

return S_OK; }

else if (riid == IID_IPersistPropertyBag || riid == IID_IPersistStreamInit || riid == IID_IPersistStorage || riid == IID_IPersistMemory) {

// Those are the persistence interfaces COleControl derived controls support // as indicated in AFXCTL.H

// Client wants to know if object is safe for initializing from persistent data *pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA; return S_OK; } else {

// Find out what interface this is, and decide what options to enable

TRACE(\\\n\ return E_NOINTERFACE; } }

STDMETHODIMP CTixCtrl::XObjectSafety::SetInterfaceSafetyOptions( REFIID riid,

DWORD dwOptionSetMask, DWORD dwEnabledOptions) {

METHOD_PROLOGUE_EX(CTixCtrl, ObjectSafety) OLECHAR szGUID[39];

// What is this interface anyway?

// We can do a quick lookup in the registry under HKEY_CLASSES_ROOT\\Interface int i = StringFromGUID2(riid, szGUID, 39);

if (0 == dwOptionSetMask && 0 == dwEnabledOptions) {

// the control certainly supports NO requests through the specified interface // so it’s safe to return S_OK even if the interface isn’t supported. return S_OK; }

// Do we support the specified interface? if (NULL == pThis->GetInterface(&riid)) {

TRACE1(\ return E_FAIL; }

if (riid == IID_IDispatch)

{

TRACE(\\\n\ TRACE(\ if (INTERFACESAFE_FOR_UNTRUSTED_CALLER == dwOptionSetMask && INTERFACESAFE_FOR_UNTRUSTED_CALLER == dwEnabledOptions) {

return S_OK; } else {

return E_FAIL; } }

else if (riid == IID_IPersistPropertyBag || riid == IID_IPersistStreamInit || riid == IID_IPersistStorage || riid == IID_IPersistMemory) {

TRACE(\\\n\

TRACE(\ if (INTERFACESAFE_FOR_UNTRUSTED_DATA == dwOptionSetMask && INTERFACESAFE_FOR_UNTRUSTED_DATA == dwEnabledOptions) {

return NOERROR; } else {

return E_FAIL; } } else {

TRACE1(\\\n\ return E_FAIL; } }

STDMETHODIMP_(ULONG) CTixCtrl::XObjectSafety::AddRef() {

METHOD_PROLOGUE_EX_(CTixCtrl, ObjectSafety) return (ULONG)pThis->ExternalAddRef(); }

STDMETHODIMP_(ULONG) CTixCtrl::XObjectSafety::Release() {

METHOD_PROLOGUE_EX_(CTixCtrl, ObjectSafety)

return (ULONG)pThis->ExternalRelease(); }

STDMETHODIMP CTixCtrl::XObjectSafety::QueryInterface( REFIID iid, LPVOID* ppvObj) {

METHOD_PROLOGUE_EX_(CTixCtrl, ObjectSafety)

return (HRESULT)pThis->ExternalQueryInterface(&iid, ppvObj); }

4.加入接口映射表中 在tixctl.h中加入声明

DECLARE_INTERFACE_MAP() 在 tixctl.cpp中加入

BEGIN_INTERFACE_MAP(CTixCtrl, COleControl)

INTERFACE_PART(CTixCtrl, IID_IObjectSafety, ObjectSafety) END_INTERFACE_MAP()

好了，试试，没问题了吧。