gtk-sharp 2.6.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. Event data. The event invokes delegates which pass event data via this class. GLib.SignalArgs Constructor Public Constructor. Create a new instance with this constructor if you need to invoke a delegate. Property System.IntPtr A pointer to the underlying C data of the accelerator that was changed. A Property Gdk.ModifierType Gets the state of the Shift, Control, Alt, and other modifier keys and mouse buttons. An object of type Property System.UInt32 Gets the key value for the accelerator event. An integer.