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# AUGraphGetInteractionInfo(_:_:_:)

Retrieves information about a particular interaction in an audio processing graph.

```
func AUGraphGetInteractionInfo(_ inGraph: AUGraph, _ inInteractionIndex: UInt32, _ outInteraction: UnsafeMutablePointer<AUNodeInteraction>) -> OSStatus
```

## Parameters

`inGraph`

`inInteractionIndex`

`outInteraction`

The interaction information at the specified index.

## Return Value

A result code.

## Discussion

An application can iterate through the interactions (as with the nodes) of a graph by retrieving the number of interactions, and then iterating an index starting from 0. The `inInteractionIndex` parameter is based on the `outNumInteractions` value and is only valid if no edits to the graph’s state have been made.

---

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