[NumLock]

Код:

  Image1.Canvas.Brush.Color:=clBtnFace;
  Image1.Canvas.FillRect(Image1.ClientRect);

  Image1.Canvas.Brush.Style:=bsClear;
  Image1.Canvas.Pen.Width:=1;
  Image1.Canvas.Pen.Color:=clRed;
  Image1.Canvas.Rectangle(0,0,49,49);