Create a full screen form without auto-hiding the Windows Taskbar

Problem/Question/Abstract:

How do I set my form to display in full screen? No title bar, no borders, and it goes over the task bar (not by setting the task bar to "Auto Hide").

Answer:

Emulating full screen mode:

private {in form declaration}

procedure WMGetMinMaxInfo(var msg: TWMGetMinMaxInfo); message WM_GETMINMAXINFO;

procedure TForm1.WMGetMinMaxInfo(var msg: TWMGetMinMaxInfo);
begin
  inherited;
  with msg.MinMaxInfo^.ptMaxTrackSize do
  begin
    X := GetDeviceCaps(Canvas.handle, HORZRES) + (Width - ClientWidth);
    Y := GetDeviceCaps(Canvas.handle, VERTRES) + (Height - ClientHeight);
  end;
end;

procedure TForm1.Button2Click(Sender: TObject);
const
  Rect: TRect = (Left: 0; Top: 0; Right: 0; Bottom: 0);
  FullScreen: Boolean = False;
begin
  FullScreen := not FullScreen;
  if FullScreen then
  begin
    Rect := BoundsRect;
    SetBounds(Left - ClientOrigin.X, Top - ClientOrigin.Y,
      GetDeviceCaps(Canvas.handle, HORZRES)
      + (Width - ClientWidth), GetDeviceCaps(Canvas.handle, VERTRES) + (Height -
      ClientHeight));
    {Label2.caption := IntToStr(GetDeviceCaps( Canvas.handle, VERTRES ));}
  end
  else
    BoundsRect := Rect;
end;