Iīm developing a software that send signals to the parallel port, but i actually discovered that windows XP blocks my attempts, how can i send the signals without being stopped? I already tried dllīs that say that with them i can access the LPT but i couldnīt, it simply showed no result, no errors no efects example of a dll: http://www.logix4u.net/inpout32.htm
OS: Windows XP Professional Service Pack 2
COMPILER: MS VC 2005