이미지에 텍스트 배경 투명 처리

with Image1 do
  begin
    Canvas.Brush.Style := bsClear;
    Canvas.Font.Color := clWhite;
    Canvas.Font.Size:=12;
    Canvas.Font.Style :=[fsBold];
    Canvas.TextOut(10, 10,'fdafstest');

  end;    // with