Состояние Lpt принтера

#include <WinIOCtl.h>

#define PARALLEL_AUTOFEED        0x02
#define PARALLEL_PAPER_EMPTY     0x04
#define PARALLEL_OFF_LINE        0x08
#define PARALLEL_POWER_OFF       0x10
#define PARALLEL_NOT_CONNECTED   0x20
#define PARALLEL_BUSY            0x40
#define PARALLEL_SELECTED        0x80

#define IOCTL_PAR_QUERY_INFORMATION CTL_CODE(FILE_DEVICE_PARALLEL_PORT, 1, METHOD_BUFFERED, FILE_ANY_ACCESS)

BOOL PrinterStatus(OUT CString &strStatus) {
   strStatus.Empty();

   BOOL bRes = FALSE;
   // пробую напрямую читать из LPT порта
   HANDLE hLpt = ::CreateFile(_T("LPT1"), GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
   if (hLpt == INVALID_HANDLE_VALUE)
   {
      DWORD dwErrCode1 = ::GetLastError();
   } else {
      PAR_QUERY_INFORMATION ParInfo;
      DWORD dwRes = 0;
      bRes = ::DeviceIoControl(hLpt, IOCTL_PAR_QUERY_INFORMATION, NULL, 0, &ParInfo, sizeof(ParInfo), &dwRes, NULL);
      if (!bRes) {
         DWORD dwErrCode2 = ::GetLastError();
      } else {
         if (ParInfo.Status & PARALLEL_INIT         ) { bRes &= TRUE ; strStatus += _T(" | PARALLEL_INIT"         ); }
         if (ParInfo.Status & PARALLEL_AUTOFEED     ) { bRes &= TRUE ; strStatus += _T(" | PARALLEL_AUTOFEED"     ); }
         if (ParInfo.Status & PARALLEL_PAPER_EMPTY  ) { bRes &= FALSE; strStatus += _T(" | PARALLEL_PAPER_EMPTY"  ); }
         if (ParInfo.Status & PARALLEL_OFF_LINE     ) { bRes &= TRUE ; strStatus += _T(" | PARALLEL_OFF_LINE"     ); }
         if (ParInfo.Status & PARALLEL_POWER_OFF    ) { bRes &= FALSE; strStatus += _T(" | PARALLEL_POWER_OFF"    ); }
         if (ParInfo.Status & PARALLEL_NOT_CONNECTED) { bRes &= FALSE; strStatus += _T(" | PARALLEL_NOT_CONNECTED"); }
         if (ParInfo.Status & PARALLEL_BUSY         ) { bRes &= FALSE; strStatus += _T(" | PARALLEL_BUSY"         ); }
         if (ParInfo.Status & PARALLEL_SELECTED     ) { bRes &= TRUE ; strStatus += _T(" | PARALLEL_SELECTED"     ); }
   
         if (!strStatus.IsEmpty()) strStatus = strStatus.Mid(3);
      }
      ::CloseHandle(hLpt); hLpt = NULL;
   }

   return bRes;
}