How can I list the plugins (BHOs) that Internet Explorer uses, from my program?

Question

I need to retrieve, in my Win32 standalone program, a list of currently installed Internet Explorer add-ons (Browser Helper Objects), and - if possible - their

Answer 1

The BHOs are registered under

HKLM\Software\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects

IE toolbars are registered under

HKLM\Software\Microsoft\Internet Explorer\Toolbar