How do I register a system wide mime filter?

I've given the Delphi components from bsalsa.com a try. These include a mime filter so that I can have access to the HTML returned from a server before it reaches the browser. However this demo only filters brow开发者_如何学运维ser instances in the current app whereas I need to register a system-wide filter.

Can someone tell me how to do that?

Thanks

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see MSDN, About Pluggable MIME filters:

You must register a permanent pluggable MIME filter in the registry with the key HKEY_CLASSES_ROOT\PROTOCOLS\Filter\ and with a value set to the CLSID of the pluggable MIME filter.