gtk-sharp Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. GLib.SignalArgs Event data for changing a tag. The event invokes delegates which pass event data via this class. Constructor Public Constructor. Create a new instance with this constructor if you need to invoke a delegate. Property System.Boolean Whether or not the size of the tag changed with this event. A , true if the size of the tag changed. Property Gtk.TextTag The tag that changed. A