delphi 투명

procedure TForm1.FormCreate(Sender: TObject);
  var
  rgn:HRGN;
  begin
    Self.Color := clRed;
    BeginPath(Canvas.Handle);
    SetBkMode(Canvas.Handle,TRANSPARENT   );
    Canvas.Font.Name:='  ';
    Canvas.Font.Size:=100;
    Canvas.TextOut(20,20,'My Baby?');
    EndPath(Canvas.Handle);
    rgn:=   PathToRegion(Canvas.Handle);
    SetWindowRgn(Handle,rgn,true);
  end;

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs;

type
  TForm1 = class(TForm)
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

  const   
        {An   array   of   points   for   the   star   region}   
        RgnPoints:array[1..10]   of   TPoint=   
        ((x:203;y:22),(x:157;y:168),(x:3;y:168),(x:128;y:257),   
        (x:81;y:402),(x:203;y:334),(x:325;y:422),(x:278;y:257),   
        (x:402;y:168),(x:249;y:168));//       
        LinePoints:array[1..11]   of   Tpoint=   
        ((x:199;y:0),(x:154;y:146),(x:2;y:146),(x:127;y:235),   
        (x:79;y:377),(x:198;y:308),(x:320;Y:396),(x:272;y:234),   
        (x:396;y:146),(x:244;y:146),(x:199;Y:0));

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var   Rgn:HRGN;
begin
    Setwindowpos(Form1.Handle,HWND_TOPMOST,Form1.Left,form1.Top,Form1.Width,Form1.Height,0);
    Rgn:=CreatepolygonRgn(Rgnpoints,High(RgnPoints),ALTERNATE);
    SetWindowRgn(Handle,rgn,True);
    Form1.color:=clgreen;
end;

end.

  
    Api         ,               ,   0~255,0     ,255     .     

  SetWindowLong(self.Handle,GWL_EXSTYLE,
     GetWindowLong(Self.Handle,GWL_EXSTYLE) xor $80000);
  SetLayeredWindowAttributes(Self.Handle,0,100,LWA_ALPHA);