gtk.WindowGroup — a group of gtk.Window widgets
| class gtk.WindowGroup(gobject.GObject): | 
A gtk.WindowGroup object contains a set of gtk.Window widgets that are managed together by some PyGTK functions and methods.
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| Returns : | a new gtk.WindowGroup. | 
Creates a new gtk.WindowGroup object. Grabs added with gtk.Widget.grab_add() only affect windows within the same gtk.WindowGroup.
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| window : | the gtk.Window to add | 
The add_window() method adds the gtk.Window specified by window to the windowgroup.
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| window : | the gtk.Window to remove | 
The remove_window() method removes the gtk.Window specified by window from the windowgroup.