🚀 go-pugleaf

Hi,
Your code incorrect.
This way you try send data in file with stange name "ffff".
Another problem place it is testing result of OpenPrinter Win32 
API function - "else" if name of printer incorrect:

   BOOL   RetCode = FALSE;
   HANDLE Printer = NULL;
   LPTSTR aName="Xerox Phaser 8200DX";
   LPCSTR Str="test me";
   DWORD err;
   if (OpenPrinter(aName, &Printer, NULL))
   {
      DWORD      Jobid    = 0;
      DOC_INFO_1 DocInfo  = {0};

      DocInfo.pDocName    = "The Document Name";
      DocInfo.pOutputFile = NULL;
      if ((Jobid = StartDocPrinter(Printer, 1, (LPBYTE) &DocInfo)) != 0)
      {
         DWORD Written;
         DWORD NumBytes = lstrlen(Str);

         WritePrinter(Printer, (void*) Str, NumBytes, &Written);

         if (Written == NumBytes)
            RetCode = TRUE;

      }

      EndDocPrinter(Printer);
      ClosePrinter(Printer);
   }
   else
    {
      err=GetLastError();
      if(err==ERROR_INVALID_PRINTER_NAME)ShowMessage("Invalid Printer Name");
        else ShowMessage("Error:"+IntToStr(err));
    }

Similar code works on my PC for LaserJet. Using next code you 
can test is it printer support Postscript:


          HANDLE hPrinter;
          PRINTDLG pd;
          DEVMODE *dv;
             int nEscapeCode;
             TCHAR szTechnology[MAX_PATH] = TEXT("");

ZeroMemory(&pd, sizeof(PRINTDLG));
pd.lStructSize = sizeof(PRINTDLG);
pd.hwndOwner = GetDesktopWindow();
pd.hDevMode = NULL; // Don't forget to free or store hDevMode.
pd.hDevNames = NULL; // Don't forget to free or store hDevNames.
pd.Flags = PD_RETURNDC ;
pd.nCopies = 4;
pd.nFromPage = 0xFFFF;
pd.nToPage = 0xFFFF;
pd.nMinPage = 1;
pd.nMaxPage = 0xFFFF;


if (PrintDlg(&pd)==TRUE) {

           dv=(LPDEVMODE)pd.hDevMode;
           char** Name=(char**)dv->dmDeviceName;
           ShowMessage(AnsiString((const char*)*Name));
           Edit1->Text=AnsiString((const char*)*Name);
             // If it supports POSTSCRIPT_PASSTHROUGH, it must be PS.
             nEscapeCode = POSTSCRIPT_PASSTHROUGH;
             if( ExtEscape( pd.hDC, QUERYESCSUPPORT, sizeof(int),
(LPCSTR)&nEscapeCode, 0, NULL ) > 0 )
                     {ShowMessage("Escape POSTSCRIPT_PASSTHROUGH is supported" );
                     return;}

             ShowMessage("Escape POSTSCRIPT_PASSTHROUGH is not supported" );
             // If it doesn't support GETTECHNOLOGY, we won't be able to tell.
             nEscapeCode = GETTECHNOLOGY;
             if( ExtEscape( pd.hDC, QUERYESCSUPPORT, sizeof(int),
(LPCSTR)&nEscapeCode, 0, NULL ) <= 0 )
                     {ShowMessage("Escape GETTECHNOLOGY is not supported" );
                     return;}
                      ShowMessage("Escape GETTECHNOLOGY is supported" );

             // Get the technology string and check to see if the word"postscript" is in it.
             if( ExtEscape( pd.hDC, GETTECHNOLOGY, 0, NULL, MAX_PATH,
(LPSTR)szTechnology ) <= 0 )
                     return;
             strupr( szTechnology );
             if( strstr( szTechnology, "POSTSCRIPT" ) == NULL )
                    {
                     ShowMessage("postscript is not supported" );
                     ShowMessage(AnsiString("Using technology is:")+szTechnology);
                     return;}

                     ShowMessage("postscript is supported" );
                     ShowMessage(AnsiString("Using technology is:")+szTechnology);
      }

Vladimir.