---
name: "SoEventCallback.h"
section: "3"
platform: "linux"
package: "libcoin80-doc"
version: "3.1.4~abc9f50-7"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/SoEventCallback.h"
---

# SoEventCallback.h(3)

## NAME

SoEventCallback.h -

## SYNOPSIS

`#include <Inventor/nodes/SoSubNode.h>`\
 `#include <Inventor/lists/SbList.h>`\
 `#include <Inventor/actions/SoHandleEventAction.h>`\

### Classes

class **SoEventCallback**\
 *The* **SoEventCallback** *class provides functionality for catching events.*

Use **SoEventCallback** nodes in the scenegraph for catching user interaction events with the scenegraph's render canvas. **"**

### Typedefs

typedef void **SoEventCallbackCB** (void \*userdata, **SoEventCallback** \*node)\

## Typedef Documentation

### void SoEventCallbackCB

**Callback functions for SoEventCallback::addEventCallback() must be of this type.** *userdata* **is the last argument to SoEventCallback::addEventCallback(), and** *node* **is of course the SoEventCallback node in the scenegraph which caused the invocation of the callback.**

## Author

**Generated automatically by Doxygen for Coin from the source code.**