...machen, dass eine Anwendung nur einmal pro Windows-Session gestartet werden kann?

Autor: Josha van Praag
Homepage: http://www.vanpraag.nl

Kategorie: System

procedure TForm1.FormShow(Sender: TObject);
var
  atom: Integer;
begin
  if GlobalFindAtom('a random string here') = 0 then
    atom := GlobalAddAtom('a random string here')
  else
  begin
    ShowMessage('This application will run once a windows-session' + #13 +
      'Restart Your computer to use this app');
    Close;
  end;
end;

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