public void RegisterHandlers()
{
ZoomIn.Activated += HandlePintaCoreActionsViewZoomInActivated;
ZoomOut.Activated += HandlePintaCoreActionsViewZoomOutActivated;
ZoomComboBox.ComboBox.Changed += HandlePintaCoreActionsViewZoomComboBoxComboBoxChanged;
(ZoomComboBox.ComboBox as Gtk.ComboBoxEntry).Entry.FocusOutEvent += new Gtk.FocusOutEventHandler (ComboBox_FocusOutEvent);
(ZoomComboBox.ComboBox as Gtk.ComboBoxEntry).Entry.FocusInEvent += new Gtk.FocusInEventHandler (Entry_FocusInEvent);
ActualSize.Activated += HandlePintaCoreActionsViewActualSizeActivated;
}