# Uses of Interface
org.eclipse.ui.IPerspectiveListener4

Packages that use IPerspectiveListener4
Package
Description
org.eclipse.ui
Application programming interfaces for interaction with and extension of the Eclipse Platform User Interface.
org.eclipse.ui.internal

## Uses of IPerspectiveListener4 in org.eclipse.ui

Classes in org.eclipse.ui that implement IPerspectiveListener4
Modifier and Type
Class
Description
`class`
`PerspectiveAdapter`
This adapter class provides default implementations for the methods described by the `IPerspectiveListener` interface and its extension interfaces.

## Uses of IPerspectiveListener4 in org.eclipse.ui.internal

Classes in org.eclipse.ui.internal that implement IPerspectiveListener4
Modifier and Type
Class
Description
`class`
`PerspectiveTracker`
Utility class for tracking the active perspective in a window.