const DWORD maxLen = 255;

DWORD userNameMaxLen = maxLen;
WCHAR userNameBuf[maxLen];

if (GetUserNameW(userNameBuf,&userNameMaxLen))
{
    USER_INFO_2 * resPtr = 0;
    NetUserGetInfo(NULL,userNameBuf,2,(LPBYTE*)&resPtr);
    LPWSTR account = (*resPtr).usri2_full_name;
    _asm nop
}