Hide Startbutton -> Draw new Startbutton -> OnClick not working

Hello,

I found on www.swissdelphicenter.com a source how to hide and disable the start button and draw a new button.
That works fine, but I  can't add an action to the left or right mouseclick to the button.

For example:
right mouseclick -> popupmenu1
left mouselcik    -> popupmenu2

Also it's not possible to use a TBitBtn instead of a TButton.

I hope you can help me again.


Thanks in advance
Achim Henning

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The source code from www.swissdelphicenter.com:
{
  The ShowStartButton function shows how to hide the start
  button, how to disable the windows buttons (LWin and RWin)
  (indirectly) and consequently how to hide the start menu.
}

procedure ShowStartButton(bvisible: Boolean);
var
  h: hwnd;
  TaskWindow: hwnd;
begin
  if bvisible then
  begin
    h := FindWindowEx(GetDesktopWindow, 0, 'Button', nil);
    TaskWindow := FindWindow('Shell_TrayWnd', nil);
    ShowWindow(h, 1);
    Windows.SetParent(h, TaskWindow);
  end  
  else
  begin
    h := FindWindowEx(FindWindow('Shell_TrayWnd', nil), 0, 'Button', nil);
    ShowWindow(h, 0);
    Windows.SetParent(h, 0);
  end;
end;

{Example to hide/reshow the Startbutton}
procedure TForm1.Button1Click(Sender: TObject);
begin
  ShowStartButton(False); // or true to reshow
end;

{Furthermore, you could create your own Startbutton and
replace the original one with your own.}
var
  b: TButton;  // or another Type of button
  h, Window: hwnd;
begin
  Window := FindWindow('Shell_TrayWnd', nil);
  b := TButton.Create(nil);
  b.ParentWindow := Window;
  b.Caption := 'Start';
  b.Width := 60;
  b.Font.Style := [fsbold];
end;