BarcodeScannerImagePreviewReceived

This event occurs when the device receives a bitmap image of the scan. The data buffer for this event is as follows.

Syntax

typedef struct _PosEventDataHeader
{
    // Event enumeration value
    PosEventType EventType;

    // Size of buffer required to read entire event (including header)
    UINT32 DataLength;
} PosEventDataHeader;

typedef struct _PosEventDataHeader PosBarcodeScannerImagePreviewEventData;

The following table shows the memory layout of the data buffer for this event.

Memory value	Description
0x00000007	EventType = PosEventType:: BarcodeScannerImagePreviewReceived
0x00000008 + length of image data	sizeof(PosBarcodeScannerImagePreviewEventData) + the size of the image preview data in bytes
Image data	The preview image data

Requirements

Header: pointofservicedriverinterface.h