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# ReportAvailable

Notifies the event service that an updated report is available from the HID device.

```
virtual void ReportAvailable(uint64_t timestamp, uint32_t reportID, uint32_t reportLength, IOHIDReportType type, IOMemoryDescriptor *report, OSAction *action);
```

## Parameters

`timestamp`

The timestamp of the report.

`reportID`

The unique ID associated with the report.

`reportLength`

The length of the report in bytes.

`type`

The report type.

`report`

A memory descriptor that contains the raw data for the report.

`action`

The `OSAction` object that handles the asynchronous report callback.

## Discussion

Implement a custom version of this method in your event service. Use the <doc://com.apple.documentation/documentation/DriverKit/TYPE> macro to let the system know that your method conforms to this prototype.

The system calls this method to notify your event service when a new report arrives.

---

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