IDispatchEx::InvokeEx (for javascript) - second time raises DISP_E_MEMBERNOTFOUND error

From: Santino (sankumar_nt_at_yahoo.com)
Date: 11/25/04 

Date: 24 Nov 2004 22:48:26 -0800

Hi,

I'm hosting a WebBrowser control in an ATL application.
I call IDispatchEx::InvokeEx to execute a javascript function
in the hosted page inside the browser control.

The function executes fine the first time, but the second
time and onwards it returns DISP_E_MEMBERNOTFOUND.

I can't figure out why this error is getting generated.
Will appreciate if you can pass me some ideas on how to
debug the cause for this issue?

Here is the code I use to execute javascript function.

void CIEScriptRunner::ExecuteJScript( BSTR bstrName,
                                      DISPPARAMS *pDispParams,
                                      CComVariant *pRetVal )
{
    CComPtr<IDispatch> spScript;
    CComPtr<IDispatchEx> spScriptEx;
    DISPID dispid;
    HRESULT hr;

    VariantClear(pRetVal);

    //Get the script fromt he document and then get the
    //IDispatchEx interface

     m_spDocument->get_Script((LPDISPATCH *) &spScript);
     spScriptEx = spScript;

     OLECHAR FAR* szMember = bstrName;

     hr = spScriptEx->GetIDsOfNames(IID_NULL, &szMember, 1,
                                    LOCALE_USER_DEFAULT,
                                    &dispid) ;

     if( dispid != -1 )
     {
          //This works fine the first time, but on subsequent
          //calls, This is returning DISP_E_MEMBERNOTFOUND ???

          hr = spScriptEx->InvokeEx(dispid, LOCALE_USER_DEFAULT,
                                    DISPATCH_METHOD, pDispParams,
                                    pRetVal, NULL, NULL);

          

     }
   
}

Thanks in Advance
San

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