开始的时候写了一个ActiveX控件,这个ActiveX是有Setup.exe的,刚开始的时候只是在本地写这个ActiveX控件,这时候使用的时候本地打开IE窗口,只是点黄框,激活ActiveX就可以使用了。
后来在www方式下打开我的页面,问题就来了,我的控件被屏蔽了。IE6还可以通过降低安全性来Enable这个ActiveX控件,IE7却是无论如何也搞不定。让我那是极其郁闷啊。
在网上一顿狂找,发现了很多信息,这些信息也是让我走了很多弯路。。。。比如有人说一定要购买数字证书,有人说一定要降低安全性,有的说要手动到Add-on Management里面去修改ActiveX的属性。
还找到说IE7默认就不可能打开ActiveX,ActiveX是Option-in的,总之让我走了太多弯路。
终于找到了一篇文章http://caoyuke.blogdriver.com/caoyuke/434528.html, 那就是在控件内实现IObjectSafety接口。
具体如下(替换MyCtrl为你自己的class name):
控件的头文件要#include <objsafe.h>
//在控件头文件中加入:
DECLARE_INTERFACE_MAP()
BEGIN_INTERFACE_PART(ObjectSafety, IObjectSafety)
STDMETHOD(GetInterfaceSafetyOptions)(REFIID riid, DWORD __RPC_FAR *pdwSupportedOptions, DWORD __RPC_FAR *pdwEnabledOptions);
STDMETHOD(SetInterfaceSafetyOptions)(REFIID riid, DWORD dwOptionSetMask, DWORD dwEnabledOptions);
END_INTERFACE_PART(ObjectSafety)
//在控件的CPP文件中加入:
BEGIN_INTERFACE_MAP(MyCtrl, COleControl)
INTERFACE_PART(MyCtrl, IID_IObjectSafety, ObjectSafety)
END_INTERFACE_MAP()
// Implementation of IObjectSafety
STDMETHODIMP MyCtrl::XObjectSafety::GetInterfaceSafetyOptions(
REFIID riid,
DWORD __RPC_FAR *pdwSupportedOptions,
DWORD __RPC_FAR *pdwEnabledOptions)
{
METHOD_PROLOGUE_EX(MyCtrl, ObjectSafety)
if (!pdwSupportedOptions || !pdwEnabledOptions)
{
return E_POINTER;
}
*pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
*pdwEnabledOptions = 0;
if (NULL == pThis->GetInterface(&riid))
{
TRACE("Requested interface is not supported./n");
return E_NOINTERFACE;
}
// What interface is being checked out anyhow?
OLECHAR szGUID[39];
int i = StringFromGUID2(riid, szGUID, 39);
if (riid == IID_IDispatch)
{
// Client wants to know if object is safe for scripting
*pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER;
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("We didn't account for the safety of this interface, and it's one we support.../n");
return E_NOINTERFACE;
}
}
STDMETHODIMP MyCtrl::XObjectSafety::SetInterfaceSafetyOptions(
REFIID riid,
DWORD dwOptionSetMask,
DWORD dwEnabledOptions)
{
METHOD_PROLOGUE_EX(MyCtrl, 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("%s is not support./n", szGUID);
return E_FAIL;
}
if (riid == IID_IDispatch)
{
TRACE("Client asking if it's safe to call through IDispatch./n");
TRACE("In other words, is the control safe for scripting?/n");
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("Client asking if it's safe to call through IPersist*./n");
TRACE("In other words, is the control safe for initializing from persistent data?/n");
if (INTERFACESAFE_FOR_UNTRUSTED_DATA == dwOptionSetMask && INTERFACESAFE_FOR_UNTRUSTED_DATA == dwEnabledOptions)
{
return NOERROR;
}
else
{
return E_FAIL;
}
}
else
{
TRACE1("We didn't account for the safety of %s, and it's one we support.../n", szGUID);
return E_FAIL;
}
}
STDMETHODIMP_(ULONG) MyCtrl::XObjectSafety::AddRef()
{
METHOD_PROLOGUE_EX_(MyCtrl, ObjectSafety)
return (ULONG)pThis->ExternalAddRef();
}
STDMETHODIMP_(ULONG) MyCtrl::XObjectSafety::Release()
{
METHOD_PROLOGUE_EX_(MyCtrl, ObjectSafety)
return (ULONG)pThis->ExternalRelease();
}
STDMETHODIMP MyCtrl::XObjectSafety::QueryInterface(
REFIID iid, LPVOID* ppvObj)
{
METHOD_PROLOGUE_EX_(MyCtrl, ObjectSafety)
return (HRESULT)pThis->ExternalQueryInterface(&iid, ppvObj);
}