public override void Close()
{
VerifyResult(_cco.Close());
_cco.DirectIOEvent -= (_IOPOSLineDisplayEvents_DirectIOEventEventHandler)_cco_DirectIOEvent;
_cco.StatusUpdateEvent -= (_IOPOSLineDisplayEvents_StatusUpdateEventEventHandler)_cco_StatusUpdateEvent;
_cco = null;
}
protected virtual void Dispose(bool disposing)
{
if (!_disposedValue)
{
if (disposing)
{
// TODO: Discard the managed state (managed object).
}
if (_cco != null)
{
_cco.DirectIOEvent -= (_IOPOSLineDisplayEvents_DirectIOEventEventHandler)_cco_DirectIOEvent;
_cco.StatusUpdateEvent -= (_IOPOSLineDisplayEvents_StatusUpdateEventEventHandler)_cco_StatusUpdateEvent;
_cco = null;
}
_disposedValue = true;
}
}
public override void Open()
{
if (string.IsNullOrWhiteSpace(_oposDeviceName))
{
try
{
_oposDeviceName = GetConfigurationProperty("OposDeviceName");
_oposDeviceName.Trim();
}
catch
{
_oposDeviceName = "";
}
}
if (string.IsNullOrWhiteSpace(_oposDeviceName))
{
string strMessage = "OposDeviceName is not configured on " + DevicePath + ".";
throw new Microsoft.PointOfService.PosControlException(strMessage, ErrorCode.NoExist);
}
if (_cco == null)
{
try
{
// CCO object CreateInstance
_cco = new OpenPOS.Devices.OPOSLineDisplay();
// Register event handler
_cco.DirectIOEvent += new _IOPOSLineDisplayEvents_DirectIOEventEventHandler(_cco_DirectIOEvent);
_cco.StatusUpdateEvent += new _IOPOSLineDisplayEvents_StatusUpdateEventEventHandler(_cco_StatusUpdateEvent);
}
catch
{
string strMessage = "Can not create Common ControlObject on " + DevicePath + ".";
throw new Microsoft.PointOfService.PosControlException(strMessage, ErrorCode.Failure);
}
}
VerifyResult(_cco.Open(_oposDeviceName));
}
public OpenPOSLineDisplay()
{
_cco = null;
_oposDeviceName = "";
_binaryConversion = 0;
}