Re: How to enable IE Toolbar plugin on installing

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

- The documentation only mentions to add one registry item
\Browser Helper Objects\<CLSID>). Is this really the only one?


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 = NULL;
if (IsEqualCLSID(rclsid, CLSID_Toolbar))
  working code for toolbar....
  return hResult;
else if (IsEqualCLSID(rclsid, CLSID_BandActivator))
  BandActivatorFactory* pClassFactory = new
BandActivatorFactory(rclsid, TEXT(""));
    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

    MessageBox(0, TEXT("GetClassObject failed"), TEXT("Toolbar"),
  return hResult;


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

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



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