Panel에 배경은 투명하게 처리하고 글자(caption)만 보여줄수 있는 방법은 없나요?

투명 Panel에 글자(Caption)를 보여야 하는데.. Canvas로도 안되네요..

도와 주세여.. 제발..


========== Source ===================
var  I : Integer;
     FullRgn, ClientRgn, ControlRgn : THandle;
     Margin, MarginX, MarginY, X, Y : Integer;
begin
     Margin := (panel.Width - panel.ClientWidth) div 2;
     FullRgn := CreateRectRgn(0, 0, panel.Width, panel.Height);
     MarginX := Margin;
     MarginY := panel.Height - panel.ClientHeight - Margin;
     ClientRgn := CreateRectRgn(MarginX, MarginY, MarginX + panel.ClientWidth,
                                                  MarginY + panel.ClientHeight);
     CombineRgn(FullRgn, FullRgn, ClientRgn, RGN_DIFF);
     for I:=0 to panel.ControlCount-1 do begin
         X := MarginX + panel.Controls[I].Left;
         Y := MarginY + panel.Controls[I].Top;
         ControlRgn := CreateRectRgn(X, Y, X + panel.Controls[I].Width,
                                           Y + panel.Controls[I].Height);
         CombineRgn(FullRgn, FullRgn, ControlRgn, RGN_OR);
     end;    
     SetWindowRgn(panel.Handle, FullRgn, True);
    TPaintPanel(panel).Canvas.Font.Color := clblue;
     TPaintPanel(panel).Canvas.TextOut(panel1.Top+1, panel1.Left+2,'aaaaa');