Изменить шрифт TStatusBar

{ 
  To use this example, you need a TStatusBar and at least one Panel. 
  Then change the style of StatusBar1.Panels[0] to 
  psOwnerDraw and add the code below to the OnDrawPanel handler. 
}

procedure TForm1.StatusBar1DrawPanel(StatusBar: TStatusBar;
  Panel: TStatusPanel; const Rect: TRect);
var
  SomeText: string;
begin
  if Panel = StatusBar1.Panels[0] then
  begin
    SomeText    := 'Hello!';
    Panel.Width := Trunc(StatusBar1.Canvas.TextWidth(SomeText) * 1.5);
    with StatusBar.Canvas do
     begin
      Brush.Color := clWhite;
      FillRect(Rect);
      Font.Name  := 'Arial';
      Font.Color := clRed;
      Font.Style := Font.Style + [fsItalic, fsBold];
      TextRect(Rect, Rect.Left + 1, Rect.Top, SomeText);
    end;
  end;
end;