public void EndPrinterJob(bool appendFormFeed = false)
{
if (!this.isPrinterReady)
{
return;
}
if (this.myHandle != IntPtr.Zero)
{
try
{
RawPrinterComponent.EndPagePrinter(this.myHandle);
RawPrinterComponent.EndDocPrinter(this.myHandle);
RawPrinterComponent.ClosePrinter(this.myHandle);
}
catch (Exception ex)
{
Trace.WriteLine("Error Al Finalizar BarCodeEPL : " + ex.Message);
}
finally
{
this.myHandle = IntPtr.Zero;
}
}
}
public bool InitilizePrinter()
{
try
{
if (RawPrinterComponent.OpenPrinter(this.printerName.Normalize(), out this.myHandle, IntPtr.Zero))
{
RawPrinterComponent.DOCINFOA docInfo = new RawPrinterComponent.DOCINFOA
{
pDocName = this.docName,
pDataType = "RAW"
};
if (!RawPrinterComponent.StartDocPrinter(this.myHandle, 1, docInfo))
{
Trace.WriteLine("Error: No se ha podido Iniciar la Impresión del Documento");
}
else
{
this.isPrinterReady = true;
}
}
else
{
Trace.WriteLine("Error: No se ha podido Abrir la Impresora");
}
}
catch (Exception ex)
{
Trace.WriteLine("Error Al Inicializar BarCodeEPL : " + ex.Message);
}
return(this.isPrinterReady);
}
public void WriteLine(string lineToPrint)
{
if (!this.isPrinterReady)
{
throw new InvalidOperationException("No se ha Inicializado la Impresora");
}
if (!lineToPrint.EndsWith("\r\n"))
{
lineToPrint = lineToPrint + "\r\n";
}
int dwCount = lineToPrint.Length;
// Assume that the printer is expecting ANSI text, and then convert
// the string to ANSI text.
IntPtr pBytes = Marshal.StringToCoTaskMemAnsi(lineToPrint);
if (this.myHandle != IntPtr.Zero)
{
try
{
int dataWrittenSize;
if (RawPrinterComponent.WritePrinter(this.myHandle, pBytes, dwCount, out dataWrittenSize))
{
if (dwCount != dataWrittenSize)
{
Trace.WriteLine("Advertencia Al Imprimir BarCodeEPL");
}
}
else
{
Trace.WriteLine("Error Al Imprimir BarCodeEPL");
}
}
catch (Exception ex)
{
Trace.WriteLine("Error Al Imprimir BarCodeEPL : " + ex.Message);
}
}
Marshal.FreeCoTaskMem(pBytes);
}
