SCardResponseCode Enumeration

	Member name	Description
	Cancelled	The action was cancelled by an SCardTrack.Cancel request.
	CommunicationLost	A communications error with the smart card has been detected. Retry the operation.
	InsufficientBuffer	The data buffer to receive returned data is too small for the returned data.
	InternalError	In internal error occurred. Example: reader does not respond with SW to an invalid command; GetUID() on 5x25
	InvalidHandle	The supplied handle was invalid.
	InvalidParameter	One or more of the supplied parameters could not be properly interpreted.
	InvalidValue	One or more of the supplied parameters values could not be properly interpreted.
	NoMemory	Not enough memory available to complete this command.
	NoReader	Cannot find a smart card reader. This error can occur if there is no reader at all or if a reader gets disconnected;
	NoService	The Smart Card Resource Manager is not running.
	NoSmartCard	The operation requires a smart card, but no smart card is currently in the device.
	NotReady	The reader or smart card is not ready to accept commands.
	NotTransacted	An attempt was made to end a non-existent transaction.
	ProtoMismatch	The requested protocols are incompatible with the protocol currently in use with the smart card.
	ReaderCallFailed	A remote procedure call during communication with a reader that is believed to be connected failed. This can happen when the reader is disconnected during communication with the card.
	ReaderCommunicationAborted	The I/O operation has been aborted because of either a thread exit or an application request. This can happen when the reader is disconnected during communication with the card.
	ReaderNotFunctioning	A reader that is believed to be connected is not functioning. This can happen when the reader is disconnected during communication with the card.
	ReaderUnavailable	The specified reader is not currently available for use.
	RemovedCard	The smart card has been removed, so that further communication is not possible. This error may be cleared by the SCardComm.Reconnect service.
	ResetCard	The smart card has been reset, so any shared state information is invalid. This error may be cleared by the SCardComm.Reconnect service.
	ServiceStopped	The Smart Card Resource Manager has shut down.
	SharingViolation	The smart card cannot be accessed because of other connections outstanding
	SystemCancelled	The action was cancelled by the system, presumably to log off or shut down.
	Timeout	The specified timeout value has expired.
	UnknownCard	The specified smart card name is not recognized
	UnknownInterface	The Smart Card Resource Manager interface is not available. This code can be generated by the system if the service is shut down during operation.
	UnknownReader	The specified reader name is not recognized.
	UnpoweredCard	Power has been removed from the card, so that further communication is not possible. This error may be cleared by the SCardComm.Reconnect service.
	UnresponsiveCard	The smart card is not responding to a reset. This error may be cleared by the SCardComm.Reconnect service.
	UnsupportedCard	The reader cannot communicate with the card, due to ATR configuration conflicts. This error may be cleared by the SCardComm.Reconnect service.

Note that other values, not defined in this enumeration, may appear inside a SCardException. Other values are derived from the actual native response code, if it lies in the range 0x80100000 through 0x8010FFFF simply by taking the low word as an unsigned value.