为什么得不到网页中的active的事件

CComPtr<IWMPCore> m_spWMPPlayer;
hr = spElemDisp.QueryInterface(&m_spWMPPlayer);
if (m_spWMPPlayer!=NULL&&SUCCEEDED(hr))
{CComPtr<IConnectionPointContainer>  spConnectionContainer;
CComPtr<IWMPEvents>          spEventListener;
CComPtr<IConnectionPoint>   m_spConnectionPoint; 
DWORD   dwCookie;  
m_spWMPPlayer->QueryInterface(&spConnectionContainer);
// hr = m_spWMPPlayer->QueryInterface(&spConnectionContainer);
if (FAILED(hr))
{
MessageBox(0,0,0,0);
break;
}hr = spConnectionContainer->FindConnectionPoint(__uuidof(IWMPEvents), &m_spConnectionPoint);
if (FAILED(hr))
{
MessageBox(0,"0.1",0,0);//会出现hr = spConnectionContainer->FindConnectionPoint(__uuidof(_WMPOCXEvents), &m_spConnectionPoint);
if (FAILED(hr))
{
MessageBox(0,"1",0,0);//会出现 TMD2个都失败了hr =E_NOINTERFACE
break;
}}
hr = m_spConnectionPoint->Advise(spEventListener, &dwCookie);
if (FAILED(hr))
{
MessageBox(0,"2",0,0);
break;
}CComPtr<IWMPCore> m_spWMPPlayer;可以修改属性，就是不能sink事件