🚀 go-pugleaf

I have a problem with printing on dotmatrix printer (POS printer with 40
characters in line). It works fine with printer on paralel port (LPT1) and
with small number of lines but when I try to print 12 lines or more (on
serial), it stops printing. I use Generic / Text only printer and this
procedure:

bool xPrint(char* szPrinterName, char *szBuffer)
{
  HANDLE hPrinter; // Printer handle
  int iLen = strlen(szBuffer);// Length of the data to be sent
  DWORD dwWritten; // How much was written to the printer

   // Open printer and get a handle to it (which is saved in hPrinter)
   if(OpenPrinter(szPrinterName, &hPrinter, NULL))
   {
   // Doc info
      DOC_INFO_1 Info;
      memset(&Info, 0, sizeof(Info));
      Info.pDocName = "My PrintJob"; // Name of the Doc (which is shown in
the PrintManager)
      Info.pOutputFile = NULL; // We're not going to write to a file so we
set it to NULL
      Info.pDatatype = "RAW"; // Data are sent in RAW format (RAW and EMF
are supported by both
      // Win9x and Win NT). Win NT also supports TEXT.
      // Start doc
      if(!StartDocPrinter(hPrinter, 1, (LPBYTE)&Info))
      return false;
      // Tell the printer we're starting on a new page
      StartPagePrinter(hPrinter); // Write data to the printer
      if(!WritePrinter(hPrinter, szBuffer, iLen, &dwWritten))
      {
      // An error happened while sending data to the printer.
      // Use LastError to figure out what went wrong.
      }
      // Tell the printer we're done writing this page
      EndPagePrinter(hPrinter);
      // End the document
      if(!EndDocPrinter(hPrinter))
         return false;
      // Close the printer
      ClosePrinter(hPrinter);
         return true;
   }
   else
   {
      return false;
   }
}

what do you think is wrong?

Thx in advance
Borut
Slovenia



-- 
Bokosoft d.o.o.
www.bokosoft.si
info@bokosoft.si
tel: 01/546 37 20
fax: 01/546 37 21