在编写一个com组件时，遇到的问题，求教，急 ！！

[lu_zi]

在编写一个com组件时，该组件支持一个事件：
dispinterface _Events
{
properties:
methods:
[id(1)] void OnDClick(DATE* date);
};
但是在mfc接收时却返回错误：类形不匹配，不知什么原因，具的相关代码如下，请指教：
template<class T>
class CProxy_Events :
public IConnectionPointImpl<T, &__uuidof(_Events)>
{
public:
HRESULT Fire_OnDClick( DATE * date)
{
HRESULT hr = S_OK;
T * pThis = static_cast<T *>(this);
int cConnections = m_vec.GetSize();

for (int iConnection = 0; iConnection < cConnections; iConnection++)
{
pThis->Lock();
CComPtr<IUnknown> punkConnection = m_vec.GetAt(iConnection);
pThis->Unlock();

IDispatch * pConnection = static_cast<IDispatch *>(punkConnection.p);

if (pConnection)
{
CComVariant avarParams[1];
avarParams[0] = date;
DISPPARAMS params = { avarParams, NULL, 1, 0 };
hr = pConnection->Invoke(1, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, ¶ms, NULL, NULL, NULL);
}
}
return hr;
}
};


mfc一端：
.h
DECLARE_EVENTSINK_MAP()
void OnDClickActiv1(DATE* date);

.cpp
BEGIN_EVENTSINK_MAP(CtestMfcDlg, CDialog)
ON_EVENT(CtestMfcDlg, IDC_PROJECTCALENDAR_ACTIV1, 1, OnDClickProjectcalendarActiv1, VTS_PDATE)
END_EVENTSINK_MAP()

void CtestMfcDlg::OnDClickActiv1(DATE* date)
{
COleDateTime t;
t=*date;
CString s=t.Format();
AfxMessageBox(s);
}