Перечислить ключи реестра

{ 
  This example demonstrates how to enumerate all registry keys from 
  a certain key (here: HKEY_CURRENT_USER) 
}
 
 
 
 
 uses
   Registry;
 
 procedure TForm1.Button1Click(Sender: TObject);
 var
   indent: Integer;
 
      procedure EnumAllKeys(hkey: THandle);
   var
     l: TStringList;
     n: Integer;
   begin
     Inc(indent, 2);
     with TRegistry.Create do
       try
         RootKey := hkey;
         OpenKey(EmptyStr, False);
         l := TStringList.Create;
         try
           GetKeynames(l);
           CloseKey;
           for n := 0 to l.Count - 1 do
           begin
             memo1.Lines.Add(StringOfChar(' ', indent) + l[n]);
             if OpenKey(l[n], False) then
             begin
               EnumAllKeys(CurrentKey);
               CloseKey;
             end;
           end;
         finally
           l.Free
         end;
       finally
         Free;
       end;
     Dec(indent, 2);
   end;
 
 begin
   Memo1.Clear;
   Memo1.Lines.Add('Keys under HKEY_CURRENT_USER');
   indent := 0;
   Memo1.Lines.BeginUpdate;
   try
     EnumAllKEys(HKEY_CURRENT_USER);
   finally
     Memo1.Lines.EndUpdate;
   end;
 end;

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