Interface Technology Basics  VST 3.7
SDK for developing VST plug-in
IPlugViewContentScaleSupport Class Referenceabstract

Plug-in view content scale support. More...

#include <iplugviewcontentscalesupport.h>

+ Inheritance diagram for IPlugViewContentScaleSupport:

Public Types

typedef float ScaleFactor
 

Public Member Functions

virtual tresult setContentScaleFactor (ScaleFactor factor)=0
 
- Public Member Functions inherited from FUnknown
virtual tresult queryInterface (const TUID _iid, void **obj)=0
 Query for a pointer to the specified interface. More...
 
virtual uint32 addRef ()=0
 Adds a reference and returns the new reference count. More...
 
virtual uint32 release ()=0
 Releases a reference and returns the new reference count. More...
 

Static Public Attributes

static const FUID iid
 
- Static Public Attributes inherited from FUnknown
static const FUID iid
 

Detailed Description

Plug-in view content scale support.

  • [plug impl]
  • [extends IPlugView]
  • [released: 3.6.6]
  • [optional]

This interface communicates the content scale factor from the host to the plug-in view on systems where plug-ins cannot get this information directly like Microsoft Windows.

The host calls setContentScaleFactor directly after the plug-in view is attached and when the scale factor changes (system change or window moved to another screen with different scaling settings). The host could call setContentScaleFactor in a different context, for example: scaling the plug-in editor for better readability. When a plug-in handles this (by returning kResultTrue), it needs to scale the width and height of its view by the scale factor and inform the host via a IPlugFrame::resizeView(), the host will then call IPlugView::onSize().

Note that the host is allowed to call setContentScaleFactor() at any time the IPlugView is valid.

Member Typedef Documentation

◆ ScaleFactor

typedef float ScaleFactor

Member Function Documentation

◆ setContentScaleFactor()

virtual tresult setContentScaleFactor ( ScaleFactor  factor)
pure virtual

Member Data Documentation

◆ iid

const FUID iid
static
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