Manual

AR-B1673 User’s Guide

Picture 3.3

After compilation, “ProtectU.dll” and “DIO.sys” files must be put in the same directory as the executable files.

For more information on Load-time library linking, please see

http://msdn.microsoft.com.

3.2 RUN-TIME LIBRARY LINKING

To use Protect-U library by Run-time library linking, we only need to use two files from Protect-U library (see

chapter 1.1), “ProtectU.dll” and “DIO.sys” files.

First the user have to load the Protect-U library using load-library command from Microsoft Visual C++, then load

the address of the Protect-U functions. After that, the Protect-U functions (see chapter 1.2) can be used like

normal Visual C++ functions.

Example:

#include <stdio.h>

#include <windows.h>

typedef int (*MYPROC)(LPTSTR);

VOID main(VOID)

{

HINSTANCE hinstLib;

MYPROC InitSecuritySystem;

MYPROC CheckId;

MYPROC ReadStatus;

MYPROC CloseSecuritySystem;

BOOL fFreeResult;

// Get a handle to the DLL module

hinstLib = LoadLibrary(TEXT(“ProtectU”));

// If the handle is valid, try to get the function address

if(hinstLib != NULL)

{