Рисование текста на рабочем столе

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, QuickRpt, QRCtrls, ExtCtrls, DB, DBTables, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var c:TCanvas;
  Form1: TForm1;

implementation

{$R *.dfm}
 function GetDesktopListViewHandle: THandle;

var

S: String;
begin

Result := FindWindow(‘ProgMan’, nil);
Result := GetWindow(Result, GW_CHILD);
Result := GetWindow(Result, GW_CHILD);
SetLength(S, 40);
GetClassName(Result, PChar(S), 39);
if PChar(S) <> ‘SysListView32′ then Result := 0;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
 c:=TCanvas.Create;
 c.Handle:=GetDC(GetDesktopListViewHandle);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  c.TextOut(10,10,‘adasdasdas’);
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
 c:=nil;
end;

end.