UI Inspector for Eclipse was created to address these difficulties. It is a plugin that contains a single view that allows you to see the properties of the selected objects and their context. You can simply point and click on any object and it will show you information about selected menus, perspectives, contributing plugins, SWT controls and associated data and actions. UI Inspector plugin can be installed in your Eclipse IDE or easily included in a RCP application.
Click on this link to get more detail: http://rcpinspect.sourceforge.net/
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