// test_version.cpp : Test for RtlGetNtVersionNumbers() API
//

#include <conio.h>
#include <iostream>
#include <tchar.h>
#include <Windows.h>

using namespace std;

typedef VOID (NTAPI* PRTL_GET_NT_VERSION_NUMBERS)(OUT LPDWORD pdwMajorVersion,
                                                  OUT LPDWORD pdwMinorVersion,
                                                  OUT LPDWORD pdwBuildNumber);


int _tmain(int argc, _TCHAR* argv[])
{
    HMODULE hNTDLL = LoadLibrary(TEXT("ntdll.dll"));
    if (hNTDLL)
    {
        PRTL_GET_NT_VERSION_NUMBERS pRtlGetVersionNumbers = (PRTL_GET_NT_VERSION_NUMBERS)GetProcAddress(hNTDLL, "RtlGetNtVersionNumbers");
        if (pRtlGetVersionNumbers)
        {
            DWORD Major, Minor, Build;
            pRtlGetVersionNumbers(&Major, &Minor, &Build);
            cout << "RtlGetNtVersionNumbers() called successfully" << endl
                 << "\tMajor = " << Major << " ; 0x" << hex << Major << dec << endl
                 << "\tMinor = " << Minor << " ; 0x" << hex << Minor << dec << endl
                 << "\tBuild = " << Build << " ; 0x" << hex << Build << dec << endl;
        }
        else
        {
            cout << "ERROR: The RtlGetNtVersionNumbers() API doesn't exist in your version of NTDLL.DLL" << endl;
        }

        FreeLibrary(hNTDLL);
    }
    else
    {
        cout << "ERROR: Cannot load NTDLL.DLL" << endl;
    }

    _getch();
    return 0;
}