Printer port

Question

Can anyone can give me a code on how to access the port addresses of the Printer port (LPT port) using c# in windows xp platform? in VC++ and VC++.net we use the conio.h library in accessing those port addresses but this won't function in windows xp tnx in advance!

Andrei Arugay · Answer

Wel i just found a way to solve it. Anyway tnx for those who view my thread! You just have to use the inpout32.dll or hwinterface.ocx which can be downloaded in the internet. its free if you use the inpout32.dll be sure to place this dll to the system directory of windows. use the following functions in c# using System.Runtime.InteropServices; //somewhere in a class [DllImport(INPOUT32.DLL)] public static extern int Inp32(int Address); [DllImport(INPOUT32.DLL] public static extern void Out32(int Addressint data); public void Function1() { lblInput.Text = (Inp32(0x379)).ToString(); Out32(0x378Convert.ToInt32(txtData.Text)); } using the hwinterface.ocx be sure to add this in the Add/Remove Toolbox Item under the COM components tab. add this control under the General control of the toolbox to the form. use the ff. functions: axHwinterface1.InPort(short Address); axHwinterface1.OutPort(short Address short data)'