protected override PrinterStatusFlags OnQueryPrinterStatus(DevicesBase.Communicators.TcpCommunicator communicator)
{
var poStatus = PaperOutStatus.Present;
bool bDrawerOpened = false;
bool bPrinting = false;
ExecuteDriverCommand(delegate()
{
WriteDebugLine("OnQueryPrinterStatus");
// запрос состояния ДЯ
byte nRsp = CheckStatusByte(communicator, 1);
bDrawerOpened = !((nRsp & 0x04) == 0x04);
// запрос состояния бумаги
nRsp = CheckStatusByte(communicator, 4);
if (((nRsp & 0x0C) == 0x0C) || ((nRsp & 0x60) == 0x60))
{
poStatus = PaperOutStatus.OutPassive;
}
else
{
poStatus = PaperOutStatus.Present;
}
});
return(new PrinterStatusFlags(bPrinting, poStatus, bOpenedDoc, bDrawerOpened));
}
private byte CheckStatusByte(DevicesBase.Communicators.TcpCommunicator communicator, int mode)
{
int retriesCount = 0;
do
{
try
{
var buffer = new byte[256];
WriteDebugLine("Очистка исходящего буфера устройства");
communicator.Read(buffer, 0, 0);
WriteDebugLine("Запрос статусного байта");
communicator.Write(new byte[] { 0x10, 0x04, (byte)mode }, 0, 3);
WriteDebugLine("Чтение статусного байта " + (retriesCount + 1));
byte nRsp = (byte)communicator.ReadByte();
WriteDebugLine("Статусный байт:", new byte[] { nRsp }, 1);
return(nRsp);
}
catch (CommunicationException E)
{
WriteDebugLine("CommunicationException" + E.ToString());
if (retriesCount++ >= 5)
{
throw;
}
System.Threading.Thread.Sleep(1000);
}
}while (true);
}
protected override PrinterStatusFlags OnQueryPrinterStatus(DevicesBase.Communicators.TcpCommunicator communicator)
{
PaperOutStatus poStatus = PaperOutStatus.Present;
bool bDrawerOpened = false;
bool bPrinting = false;
ErrorCode = new ServerErrorCode(this, GeneralError.Success);
return(new PrinterStatusFlags(bPrinting, poStatus, _openedDoc, bDrawerOpened));
}
