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Barcode scanner events

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This section describes the events that are passed from the device driver to the Point of Service (POS) API layer by using ReadFile. This section focuses on events that are specific to barcode scanners.

In this section

BarcodeScannerDataReceived
Occurs after a successful scan event.

BarcodeScannerErrorOccurred
Occurs when there is an error, such as a scanning error.

BarcodeScannerImagePreviewReceived
Occurs when the device receives a bitmap image of the scan.

BarcodeScannerTriggerPressed
Occurs when the barcode scanner trigger is pressed.

BarcodeScannerTriggerReleased
Occurs when the barcode scanner trigger is released.