---
title: structureInputDescriptor
framework: driverkit
role: symbol
role_heading: Instance Property
path: driverkit/iouserclientmethodarguments/structureinputdescriptor
---

# structureInputDescriptor

A memory descriptor containing structure input from the IOKit connect method.

## Declaration

```occ
IOMemoryDescriptor * structureInputDescriptor;
```

## Discussion

Discussion This parameter is set only for large structures, and if set structureInput is NULL.

## See Also

### Getting the Method Arguments

- [version](driverkit/iouserclientmethodarguments/version.md)
- [selector](driverkit/iouserclientmethodarguments/selector.md)
- [completion](driverkit/iouserclientmethodarguments/completion.md)
- [scalarInput](driverkit/iouserclientmethodarguments/scalarinput.md)
- [scalarInputCount](driverkit/iouserclientmethodarguments/scalarinputcount.md)
- [structureInput](driverkit/iouserclientmethodarguments/structureinput.md)
- [scalarOutput](driverkit/iouserclientmethodarguments/scalaroutput.md)
- [scalarOutputCount](driverkit/iouserclientmethodarguments/scalaroutputcount.md)
- [structureOutput](driverkit/iouserclientmethodarguments/structureoutput.md)
- [structureOutputDescriptor](driverkit/iouserclientmethodarguments/structureoutputdescriptor.md)
- [structureOutputMaximumSize](driverkit/iouserclientmethodarguments/structureoutputmaximumsize.md)