mono/xwt — pull request #350 by residuum (2014-06-26 10:12:52+00:00)
Title: [WPF] [GTK] Sensitivity for WindowFrame, implementing #349 

In Xwt, only Xwt.Widget contains the property Sensitive, and this excludes Xwt.Window, while in both GTK# and WPF, this property is available for Gtk.Widget and System.Windows.UIElement, both in the inheritance path of Window.

On Mac, Window.Sensitive is already in the repository.