faketool???

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DeleteFile();

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var
  gros, klein : HICON
  Icon : TIcon;
begin
  Icon := TIcon.Create;
  ExtractIconEx('C:\Datei.exe',0,gros,klein,1);
  test.Handle := klein;
  test.SaveToFile('C:\Icon.ico')
  FreeAndNil(Icon);;
end;

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...
Icon.LoadFromFile('C:\Icon.ico');
...

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const
   WM_TNAEVENT = WM_USER + $1337;
...
var
  TrayIcon : NOTIFYICONDATA;
begin
  with TrayIcon do
   begin
     cbSize := SizeOf(TrayIcon);
     Wnd    := Form1.Handle;                                 // Handle, an das Nachrichten geschickt werden
     uID    := 0;
     uFlags := NIF_ICON or NIF_MESSAGE or NIF_TIP;
     uCallbackMessage := WM_TNAEVENT;          // Callback Message
     hIcon  := Icon.Handle;                                      // Das Icon von oben
     szTip  := 'Programmname';                             // Der Hinttext vom Icon
   end;
   Shell_NotifyIcon(NIM_ADD,@TrayIcon);
end;

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  procedure TNAMessageHandler(var Message : TMessage); message WM_TNAEVENT;

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begin
  if Message.msg = WM_LBUTTONDBLClICK then          // wenn links doppelgeklcitk wird dann
   begin
       // Hier halt rein, was dann passieren soll z.b. Showmessage oder so
   end;
end;

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unit Utest;

interface

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

const
  WM_TNAEVENT = WM_USER + $1337;

type
  TForm1 = class(TForm)
    Button1: TButton;
    OpenDialog1: TOpenDialog;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private-Deklarationen }
    procedure TrayMsgHandler(var Message:TMessage);message WM_TNAEVENT;
  public
    { Public-Deklarationen }
  end;

var
  Form1      : TForm1;
  str        : TMemoryStream;
  tray_hint  : String = '';
  tray : NOTIFYICONDATA;

implementation

{$R *.dfm}

(*
uses
  madkernel;
*)

procedure TForm1.Button1Click(Sender: TObject);
var
  gros, klein : HICON;
(*i    : Integer;*)
begin
  if OpenDialog1.Execute then
    ExtractIconEx(PCHAR(OpenDialog1.FileName),0,gros,klein,1);

(*
  for i := 0 to TrayIcons.ItemCount - 1 do
    if lowercase(ExtractFilename(TrayIcons[i].Window.OwnerProcess.ExeFile)) = lowercase(ExtractFileName(OpenDialog1.FileName))
     then tray_hint := TrayIcons[i].Hint;
*)

  with TIcon.Create do
   begin
     Handle := klein;
     SaveToStream(str);
     Free;
   end;
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  icon : TICON;
begin
  icon := TICON.Create;
  str.Seek(0,soFromBeginning);
  icon.LoadFromStream(str);
  with tray do
   begin
     cbSize := SizeOf(tray);
     Wnd    := Handle;
     uID    := 0;
     uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP;
     uCallbackMessage := WM_TNAEVENT;
     if tray_hint <> '' then
       StrPLCopy(szTip,tray_hint,255)
     else StrPLCopy(szTip,OpenDialog1.FileName,255);
     hIcon := icon.Handle;
   end;
  Shell_NotifyIcon(NIM_ADD,@tray);
  icon.Free;
end;

procedure TForm1.TrayMsgHandler(var Message: TMessage);
begin
  if Message.LParam = WM_LBUTTONDOWN then
    MessageDlg('Ein Fehler ist aufgetreten', mtError, [mbOK], 0);
end;

INITIALIZATION
  str := TMemoryStream.Create;

FINALIZATION
  FreeAndNil(str);
  Shell_NotifyIcon(NIM_DELETE,@tray);

end.