// pointofservicedriverinterface.h

typedef struct _PosBarcodeScannerErrorOccurredEventData {
  PosEventDataHeader                     Header;
  LONG                                   IsRetriable;
  DriverUnifiedPosErrorSeverity          Severity;
  UINT32                                 VendorErrorCode;
  DriverUnifiedPosErrorReason            Reason;
  UINT32                                 ExtendedReason;
  UINT32                                 MessageLength;
  PosBarcodeScannerDataReceivedEventData PartialData;
} PosBarcodeScannerErrorOccurredEventData;
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Windows Driver Kit DDI reference (ns-pointofservicedriverinterface-_posbarcodescannererroroccurredeventdata)

_PosBarcodeScannerErrorOccurredEventData structure

Description

This structure contains the error data that is passed to the BarcodeScannerErrorOccurred event.

Members

`Header`

The PosEventDataHeader structure that describes the amount of memory, in bytes, of the PosBarcodeScannerErrorOccurredEventData structure and trailing error message and scan data.

`IsRetriable`

Indicates whether ReadFile can be called again to read this event

`Severity`

Contains a value in the UnifiedPosErrorSeverity enumeration indicating the severity of the error.

`VendorErrorCode`

Contains a vendor-specific error code.

`Reason`

Contains a value in the UnifiedPosErrorReason enumeration indicating the reason for the error.

`ExtendedReason`

Contains additional data about the reason for the error.

`MessageLength`

Indicates the length, in bytes, of the error message.

`PartialData`

If a scanning error occurs, and some scan data was obtained, the partial scan data will be available in this parameter.

Remarks

The error data should fill the buffer as shown in the following table (in order).

Data	Length in bytes
PosBarcodeScannerErrorOccurredEventData structure	sizeof(PosBarcodeScannerErrorOccurredEventData)
Error message text	MessageLength
Partial scan data	PartialData.ScanDataLength
Label data	PartialData.ScanDataLabelLength

View the official Windows Driver Kit DDI reference

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