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Notifying applications that the registry has changed

Title: Notifying applications that the registry has changed Question: When I make a change to the registry, some applications do not seem to acknowledge the changes until they are restarted. How can I get the applications to respond to the changes? Answer: Broadcast a WM_WININICHANGE message to the system, sending a null terminated string detailing the registry section that changed. Most well written applications should respond to the WM_WININICHANGE message. Example: procedure TForm1.Button1Click(Sender: TObject); begin SendMessage(HWND_BROADCAST, WM_WININICHANGE, 0, LongInt(PChar('RegistrySection'))); end;