[news.eclipse.modeling.gmf] How remove defaultperspective from the widge

[albert <albert.mvt@xxxxxxxxx>]

hai ,

        i am working with Rcp application my application is running on 
the eclipse ide like "org.eclipse.platform.ide" during the rumtime 
display default perspective in the widget.i want to remove the default 
resource perspective from the widget,how to tackle this problem.

                                  By
                                 Albert