Protocol

FxOnScreenControlAPI_v3

The FxOnScreenControlAPI_v3 protocol specifies additions to the FxOnScreenControlAPI protocol which defines the methods the host application provides to manage conversions between various on-screen coordinate spaces.

Declaration

@protocol FxOnScreenControlAPI_v3

Overview

This protocol inherits from, and expands on, the FxOnScreenControlAPI_v2 protocol. It can retrieve information about the scaling factor used to draw on screen controls to the screen.

Topics

Getting Scaling Factor

- backingScaleFactor

Returns the scale factor for drawing the on-screen control to the current screen.

Required.

Relationships

See Also

APIs

FxOnScreenControlAPI

The FxOnScreenControlAPI protocol defines the methods the host application uses to draw controls and other user interface elements directly on the canvas where the user has applied the plug-in.

FxOnScreenControlAPI_v2

The FxOnScreenControlAPI_v2 protocol specifies additions to the FxOnScreenControlAPI protocol which defines the methods the host application provides to manage conversions between various on-screen coordinate spaces.

FxOnScreenControlAPI_v4

The FxOnScreenControlAPI_v4 protocol specifies additions to the FxOnScreenControlAPI protocol which defines the methods the host application provides to manage conversions between various on-screen coordinate spaces.