[NukeZzZin]

This is a simple method to get HWID using <windows.h>.

Code:

#include <iostream>
#include <windows.h>

int main(int argc, char** argv)
{
    // ~ initialize (HW_PROFILE_INFO) structure
    HW_PROFILE_INFO _HW_PROFILE_INFO;
    // ~ setting (HW_PROFILE_INFO) structure
    if (GetCurrentHwProfile(&_HW_PROFILE_INFO) != FALSE)
    {
        // ~ printing (HW_PROFILE_INFO) structure
        std::cout << "Hardware Guid: " << _HW_PROFILE_INFO.szHwProfileGuid << std::endl;
    }
    return EXIT_SUCCESS;
}