VST 3 Interfaces VST 3.6.11 SDK for developing VST Plug-in

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IComponentHandlerBusActivation Class Referenceabstract
VST 3 Interfaces to be implemented by the Host | VST 3 Interfaces defined in version 3.6.8

Extended Host callback interface IComponentHandlerBusActivation for an edit controller. More...

`#include <ivsteditcontroller.h>`

Inheritance diagram for IComponentHandlerBusActivation:

## Public Member Functions
virtual tresult | requestBusActivation (MediaType type, BusDirection dir, int32 index, TBool state)=0
| request the host to activate or deactivate a specific bus. More...
Public Member Functions inherited from FUnknown
virtual tresult | queryInterface (const TUID _iid, void **obj)=0
virtual uint32 | addRef ()=0
virtual uint32 | release ()=0

## Static Public Attributes
static const FUID | iid
Static Public Attributes inherited from FUnknown
static const FUID | iid

## Detailed Description

Extended Host callback interface IComponentHandlerBusActivation for an edit controller.

- [host imp]
- [extends IComponentHandler]
- [released: 3.6.8]

Allows the Plug-in to request the host to activate or deactivate a specific bus, if the host accepts it will call later on IComponent::activateBus (see IComponent::activateBus). Useful especially for Instrument with more than 1 outputs, where the user could request from the Plug-in UI a given output bus activation.

See also
  IComponentHandler

## Member Function Documentation

virtual tresult requestBusActivation | ( | MediaType | type,
|  | BusDirection | dir,
|  | int32 | index,
|  | TBool | state
| ) |  |
| pure virtual

request the host to activate or deactivate a specific bus.

## Member Data Documentation

const FUID iid
| static

Empty

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