---
title: IOHIDReportCallback
framework: IOKit
role: symbol
role_heading: Type Alias
platforms: [Mac Catalyst 18.4+, macOS 10.5+]
path: iokit/iohidreportcallback
---

# IOHIDReportCallback

## Declaration

```occ
typedef void (*IOHIDReportCallback)(void *context, IOReturn result, void *sender, IOHIDReportType type, uint32_t reportID, uint8_t *report, CFIndex reportLength);
```

## Parameters

- `context`: void * pointer to your data, often a pointer to an object.
- `result`: Completion result of desired operation.
- `refcon`: void * pointer to more data.
- `sender`: Interface instance sending the completion routine.
- `type`: The type of the report that was completed.
- `reportID`: The ID of the report that was completed.
- `report`: Pointer to the buffer containing the contents of the report.
- `reportLength`: Size of the buffer received upon completion.

## Discussion

Discussion Type and arguments of callout C function that is used when a HID report completion routine is called.

## See Also

### Callbacks

- [IOHIDCallback](iokit/iohidcallback.md)
- [IOHIDDeviceCallback](iokit/iohiddevicecallback.md)
- [IOHIDValueCallback](iokit/iohidvaluecallback.md)
- [IOHIDValueMultipleCallback](iokit/iohidvaluemultiplecallback.md)