documentation:development:opera:pf25:ppgfldr:pgsfldr:spr:09spr011

Table of Contents

Knob
- - Description
  - Folio
  - Item Type
  - Create
  - Delete
  - Query
  - Modify
  - Use
  - Tags
  - See Also

Knob

An item for adjusting an Instrument's parameters.

Description

A Knob is an Item for adjusting an Instrument's parameters.

Folio

audio

Item Type

AUDIO_KNOB_NODE

Create

CreateItem()

GrabKnob()

Delete

DeleteItem()

ReleaseKnob()

Query

GetAudioItemInfo()

Modify

None

Use

TweakKnob()

TweakRawKnob()

Tags

AF_TAG_CURRENT (int32) Query. Returns the current raw value of knob.

AF_TAG_DEFAULT (int32) Query. Returns the default raw value of knob.

AF_TAG_INSTRUMENT (Item) Create. Specifies from which instrument to grab knob.

AF_TAG_MAX (int32) Query. Returns maximum raw value of knob.

AF_TAG_MIN (int32) Query. Returns minimum raw value of knob.

AF_TAG_NAME (const char *) Create, Query. Knob name. On creation, specifies name of knob to grab. On query, returns a pointer to knob's name.

See Also

Instrument, Probe

documentation/development/opera/pf25/ppgfldr/pgsfldr/spr/09spr011.txt · Last modified: 2022/10/10 16:53 by 127.0.0.1