---
name: "SoIdleSensor"
section: "3"
platform: "linux"
package: "coin"
version: "1:4.0.10-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/SoIdleSensor"
---

# SoIdleSensor(3)

The SoIdleSensor class is a sensor which will trigger as soon as the application is idle.

## NAME

SoIdleSensor - The **SoIdleSensor** class is a sensor which will trigger as soon as the application is idle.

## SYNOPSIS

\#include \<Inventor/sensors/SoIdleSensor.h\>

Inherits **SoDelayQueueSensor**.

### Public Member Functions

**SoIdleSensor** (void)\
 **SoIdleSensor** (SoSensorCB \***func**, void \*data)\
 virtual **~SoIdleSensor** (void)\

Public Member Functions inherited from **SoDelayQueueSensor** **SoDelayQueueSensor** (void)\
 **SoDelayQueueSensor** (SoSensorCB \***func**, void \*data)\
 virtual **~SoDelayQueueSensor** (void)\
 void **setPriority** (uint32\_t pri)\
 uint32\_t **getPriority** (void) const\
 virtual void **schedule** (void)\
 virtual void **unschedule** (void)\
 virtual SbBool **isScheduled** (void) const\
 virtual void **trigger** (void)\

Public Member Functions inherited from **SoSensor** **SoSensor** (void)\
 **SoSensor** (SoSensorCB \***func**, void \*data)\
 virtual **~SoSensor** (void)\
 void **setFunction** (SoSensorCB \*callbackfunction)\
 SoSensorCBPtr **getFunction** (void) const\
 void **setData** (void \*callbackdata)\
 void \* **getData** (void) const\
 void **setNextInQueue** (**SoSensor** \*next)\
 **SoSensor** \* **getNextInQueue** (void) const\

### Additional Inherited Members

Static Public Member Functions inherited from **SoDelayQueueSensor** static uint32\_t **getDefaultPriority** (void)\

Static Public Member Functions inherited from **SoSensor** static void **initClass** (void)\

Protected Attributes inherited from **SoDelayQueueSensor** SbBool **scheduled**\

Protected Attributes inherited from **SoSensor** SoSensorCB \* **func**\
 void \* **funcData**\

## Detailed Description

The **SoIdleSensor** class is a sensor which will trigger as soon as the application is idle.

An **SoIdleSensor** differs from an **SoOneShotSensor** in that it will not trigger if the delay queue processing is occurring due to the delay queue timeout, but *only* when the application is idle.

**See also**

**SoDB::setDelaySensorTimeout()**

## Constructor & Destructor Documentation

### SoIdleSensor::SoIdleSensor (void )

Default constructor.

### SoIdleSensor::SoIdleSensor (SoSensorCB \* func, void \* data)

Constructor taking as parameters the sensor callback function and the userdata which will be passed to the callback.

**See also**

**setFunction()**, **setData()**

### SoIdleSensor::~SoIdleSensor (void ) \[virtual\]

Destructor.

## Author

Generated automatically by Doxygen for Coin from the source code.