# Package org.eclipse.ui.swt

package org.eclipse.ui.swt
Application programming interfaces for interaction with and extension of the Eclipse Platform User Interface.

## Package Specification

This package provides API so an in-focus control can participate in the Commands and Handlers framework.

Related Packages
Package
Description
org.eclipse.ui
Application programming interfaces for interaction with and extension of the Eclipse Platform User Interface.
Interfaces
Class
Description
IFocusService
Tracks focusGained and focusLost events for a Control registered with this service, and provides the control and its registered ID as variables to the application evaluation context for evaluation by the various services.