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  "identifier" : "/documentation/HIDDriverKit/IOHIDDigitizerTouchData",
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# IOHIDDigitizerTouchData

A structure containing the current digitizer touch data.

```
typedef struct IOHIDDigitizerTouchData { ... } IOHIDDigitizerTouchData;
```

## Overview

Pass this structure to the [`dispatchDigitizerTouchEvent`](/documentation/HIDDriverKit/IOHIDEventService/dispatchDigitizerTouchEvent) method when dispatching touch events.

## Topics

### Getting the Touch Data

[`uint32_t identifier;`](/documentation/HIDDriverKit/IOHIDDigitizerTouchData/identifier)

A unique contact identifier.

[`IOFixed x;`](/documentation/HIDDriverKit/IOHIDDigitizerTouchData/x)

An x-coordinate value in the range `0.0` to `1.0`.

[`IOFixed y;`](/documentation/HIDDriverKit/IOHIDDigitizerTouchData/y)

A y-coordinate value in the range `0.0` to `1.0`.

[`uint32_t inRange;`](/documentation/HIDDriverKit/IOHIDDigitizerTouchData/inRange)

A single-bit Boolean that indicates whether the finger is in range.

[`uint32_t touch;`](/documentation/HIDDriverKit/IOHIDDigitizerTouchData/touch)

A single-bit Boolean that indicates whether the finger is in contact with the surface of the digitizer.

[`uint32_t touchValid;`](/documentation/HIDDriverKit/IOHIDDigitizerTouchData/touchValid)

A single-bit Boolean that indicates whether the touch contact was intended.

[`uint32_t touchChanged;`](/documentation/HIDDriverKit/IOHIDDigitizerTouchData/touchChanged)

A single-bit Boolean that indicates whether the touch variable changed since the last event was dispatched.

[`uint32_t positionChanged;`](/documentation/HIDDriverKit/IOHIDDigitizerTouchData/positionChanged)

A single-bit Boolean that indicates whether the x or y position changed since the last event was dispatched.

[`uint32_t rangeChanged;`](/documentation/HIDDriverKit/IOHIDDigitizerTouchData/rangeChanged)

A single-bit Boolean that indicates whether the range variable changed since the last event was dispatched.


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