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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