Delphi Tips

Hide a process in the kill task menu

How can I hide my application in 
the Ctrl+Alt+Del menu? You need to 
use RegisterServiceProcess, which 
has to be imported from the kernel.
See the following example:


unit Unit1;

Interface

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

type
  TForm1 = class (TForm)
    Button1 : TButton;
    procedure FormDestroy (Sender: TObject);
    procedure FormCreate (Sender: TObject);
  private
    { private declarations }
  public
    { public declarations }
  end;

var
  Form1 : TForm1;

implementation

{$R *.DFM}

const
  RSPSIMPLESERVICE     = 1;
  RSPUNREGISTERSERVICE = 0;

function RegisterServiceProcess(dwProcessID, 
  dwType: DWord) : DWord; stdcall; 
  external 'KERNEL32.DLL';

procedure TForm1.FormDestroy(Sender: TObject);
begin
  RegisterServiceProcess(GetCurrentProcessID, 
                           RSPUNREGISTERSERVICE)
end;


procedure TForm1.FormCreate (Sender: TObject);
begin
  RegisterServiceProcess (GetCurrentProcessID, 
                            RSPSIMPLESERVICE)
end;


end.

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