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 _____
|     |
|X X X|
|_____|					

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procedure TForm1.FormCanResize(Sender: TObject; var NewWidth,
  NewHeight: Integer; var Resize: Boolean);
  var
  w,h:Integer;
begin
 if FIsInResize then exit;
  try
    FIsInResize := true;
    w := width;
    h := Height;
    if vh<1 then
        begin
          ScaleBy(NewHeight,h);
          NewWidth := Round(NewHeight * vh);
        end
    else
        begin
          ScaleBy(NewWidth,w);
          NewHeight := Round(NewWidth / vh);
        end;

  finally
    FIsInResize := false;
  end;
end;