How to refresh icons immediately?

Hi.

I changed system icons(for example Trash,Drive,Folder)
in the way of changing registry.

But,I can't refresh the icons immediately.

How to do it by pushing a button on a Form?

When I use TweakUI to change Shortcut icon,
the system icons which I changed are refresh too.

Probably it uses WindowsAPI,but I havn't WinSight32.

Regards.

+[] Signature.pas ------------------------------------------_DX+

  Name   := 'HIKI Takehito';                                        
  E-Mail := f8498...@ca.aif.or.jp ;                            
                         
+=============================================================/+