Driver mouse and keyboard made in Delphi

I need a solution that simulates presses mouse and keyboards made ​​in DELPHI . So far so very simple, but there is an installed program that monitors somehow , somehow , but this program identifies that was not a physical mouse or keyboard press . Ie identifies and intercepts my commands , allowing not generate the simulation keys and mouse. I've tried using keybd_event , mouse_event , SendInput and PostMessage , would make a virtual device , kernel driver, or something like that ?