---
title: FxParameterRetrievalAPI_v6
framework: Professional Video Applications
role: symbol
role_heading: Protocol
platforms: [fxplug 4.0+]
path: professional_video_applications/fxparameterretrievalapi_v6
---

# FxParameterRetrievalAPI_v6

Defines the functions the application provides to retrieve parameter values.

## Declaration

```swift
protocol FxParameterRetrievalAPI_v6 : NSObjectProtocol
```

## Mentioned in

Adding onscreen controls to plug-ins Communicating with the plug-in state Using FxPlug APIs

## Topics

### Instance Methods

- [getBoolValue(_:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getboolvalue(_:fromparameter:at:).md)
- [getCustomParameterValue(_:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getcustomparametervalue(_:fromparameter:at:).md)
- [getFloatValue(_:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getfloatvalue(_:fromparameter:at:).md)
- [getFontName(_:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getfontname(_:fromparameter:at:).md)
- [getGradientSamples(_:numSamples:depth:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getgradientsamples(_:numsamples:depth:fromparameter:at:).md)
- [getHistogramBlack(in:blackOut:whiteIn:whiteOut:gamma:forChannel:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/gethistogramblack(in:blackout:whitein:whiteout:gamma:forchannel:fromparameter:at:).md)
- [getIntValue(_:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getintvalue(_:fromparameter:at:).md)
- [getParameterFlags(_:fromParameter:)](professional_video_applications/fxparameterretrievalapi_v6/getparameterflags(_:fromparameter:).md)
- [getPathID(_:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getpathid(_:fromparameter:at:).md)
- [getRedValue(_:greenValue:blueValue:alphaValue:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getredvalue(_:greenvalue:bluevalue:alphavalue:fromparameter:at:).md)
- [getRedValue(_:greenValue:blueValue:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getredvalue(_:greenvalue:bluevalue:fromparameter:at:).md)
- [getStringParameterValue(_:fromParameter:)](professional_video_applications/fxparameterretrievalapi_v6/getstringparametervalue(_:fromparameter:).md)
- [getXValue(_:yValue:fromParameter:at:)](professional_video_applications/fxparameterretrievalapi_v6/getxvalue(_:yvalue:fromparameter:at:).md)

## Relationships

### Inherits From

- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

### Inherited By

- [FxParameterRetrievalAPI_v7](professional_video_applications/fxparameterretrievalapi_v7.md)

## See Also

### Parameter APIs

- [FxParameterCreationAPI_v5](professional_video_applications/fxparametercreationapi_v5.md)
- [FxParameterRetrievalAPI_v7](professional_video_applications/fxparameterretrievalapi_v7.md)
- [FxParameterSettingAPI_v5](professional_video_applications/fxparametersettingapi_v5.md)
- [FxParameterSettingAPI_v6](professional_video_applications/fxparametersettingapi_v6.md)
- [FxDynamicParameterAPI_v3](professional_video_applications/fxdynamicparameterapi_v3.md)