Greetings. I am interested in thoughts and advice on parallel ports. I have equipment that is controlled thru the LPT1. Under DOS, I used the biosprint function, which is now defunct in C++. I have tried using CreateFile and WriteFile in MFC, but have found Windows 98 to be very finicky about allowing the user to directly control the port - I can verify that the data has been sent to the port using CreateFile and WriteFile, but my equipment does not respond. Yet, I can go to the DOS prompt on the same machine and use the old functions and the equipment responds immediately. (But to fit in with the rest of the program, I have to do this in Windows 98) Does anyone have suggestions or experience sending integer data to the LPT1 - or ideas about where I am going wrong? Thanks in advance.

Hello Norbert: There are a couple of ActiveX controls that could do this. Visual C++ comes with a registered multi-media control - you can get info on it by looking under your registered ActiveX controls and clicking on MS Communications Control. If you need more flexibility and ActiveX controls that easily fit into dialog boxes, you might try TegoSoft. You can look over their ActiveX controls at www.tegosoft.com If you are looking for some very simple classes that you can include in your project to set levels automatically, I can point you in some directions. Email me at: Regards, Myles