Is there a Preview Handler VCL for Windows 7?

Question

This article

http://msdn.microsoft.com/en-gb/library/bb776867.aspx

describes preview handlers in Windows as

Preview handlers are calle

Answer 1

I can't find any references to using IPreviewHandlerFrame in Delphi, but did manage to come up with a C# example here - maybe it'll give you a starting point.