Re: How to enable IE Toolbar plugin on installing

From:

Francis <francis.rammeloo@gmail.com>

Newsgroups:

microsoft.public.vc.atl

Date:

Fri, 7 Mar 2008 03:34:31 -0800 (PST)

Message-ID:

<03a3efac-6acf-4af2-bc5a-6de6b53c92a7@m34g2000hsc.googlegroups.com>

- The documentation only mentions to add one registry item
(HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
\Browser Helper Objects\<CLSID>). Is this really the only one?

Yes.

Thanks again for your reply Igor, you info is really helpful.

I added my BHO CLSDI to the registry, but I wonder how the link is
made to my DLL file? And what triggers the activation of my BHO?

I have implemented the my BHO, I created a factory class for it, and
implemented DllClassobject like this:

STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID
*ppReturn)
{
*ppReturn = NULL;
if (IsEqualCLSID(rclsid, CLSID_Toolbar))
{
  working code for toolbar....
  return hResult;
}
else if (IsEqualCLSID(rclsid, CLSID_BandActivator))
{
  BandActivatorFactory* pClassFactory = new
BandActivatorFactory(rclsid, TEXT(""));
  if(!pClassFactory)
  {
    return E_OUTOFMEMORY;
  }

  HRESULT hResult = pClassFactory->QueryInterface(riid, ppReturn);

  //call Release to decement the ref count - creating the object set
it to one
  //and QueryInterface incremented it - since its being used
externally (not by
  //us), we only want the ref count to be 1
  pClassFactory->Release();

  if(!SUCCEEDED(hResult))
  {
    MessageBox(0, TEXT("GetClassObject failed"), TEXT("Toolbar"),
MB_OK);
  }
  return hResult;
}
else
{
  return CLASS_E_CLASSNOTAVAILABLE;
}

}

So I am sharing DllGetClassObject for both BHO and Toolbar, which is a
logical choice I think because both are in the same DLL. Is this
correct?

The BHO code never gets executed. I suspect that I am missing
something obvious. Do you have any idea?

Grtz,

Francis