public static void KeyHandlerDown(Object o, UI.Keypad.KeyEventArgs evArgs)
{
int keyCode;
keyCode = evArgs.KeyChar;
if (keyCode == 43)
{
Environment.Exit(0);
}
else if (keyCode == 1 && !BarcodeScanner.barcodeIsSet)
{
BarcodeScanner.Scan();
}
else if (!CountSetter.countSet)
{
CountSetter.SetCount(keyCode);
}
else
{
if (keyCode == 10)
{
Printer.Print();
}
else if (keyCode == 9)
{
BarcodeScanner.barcodeIsSet = false;
CountSetter.ResetCount();
SetInitialScreen();
}
}
}
public static void Scan()
{
Communication.USBHost usbHost = new Communication.USBHost("/dev/ttyUSB0");
usbHost.Open();
if (usbHost.IsOpen)
{
FileStream fileStream = usbHost.GetStream();
try
{
int length;
while (true)
{
Byte[] bytes = new Byte[256];
if ((length = fileStream.Read(bytes, 0, bytes.Length)) > 0)
{
scannedBarcode = Encoding.ASCII.GetString(bytes, 0, length).Trim();
barcodeIsSet = true;
CountSetter.SetCountScreen();
break;
}
else
{
Thread.Sleep(1000);
}
}
}
catch (Exception ex)
{
}
usbHost.Close();
}
usbHost.Dispose();
}