public MenuButtonSetAction(int itemIndex, MenuPaneInfo pane, bool keyboardAction)
 {
     ItemIndex      = itemIndex;
     Pane           = pane;
     KeyboardAction = keyboardAction;
 }
 public MenuPaneOpenAction(MenuPaneInfo pane, bool keyboardAction)
 {
     Pane           = pane;
     KeyboardAction = keyboardAction;
 }
 public MenuButtonClickAction(MenuPaneInfo pane, int index)
 {
     Pane  = pane;
     Index = index;
 }