Method insertAction

menu.go:227–265

(action *Action, visibleChanged bool)

}

func (m *Menu) insertAction(action *Action, visibleChanged bool) (err error) {
	m.handleDefaultState(action)

	if !visibleChanged {
		action.addChangedHandler(m)
		defer func() {
			if err != nil {
				action.removeChangedHandler(m)
			}
		}()
	}

	if !action.Visible() {
		return
	}

	index := m.actions.indexInObserver(action)

	var mii win.MENUITEMINFO

	m.initMenuItemInfoFromAction(&mii, action)

	if !win.InsertMenuItem(m.hMenu, uint32(index), true, &mii) {
		return newError("InsertMenuItem failed")
	}

	if action.Default() {
		win.SetMenuDefaultItem(m.hMenu, uint32(m.actions.indexInObserver(action)), true)
	}

	menu := action.menu
	if menu != nil {
		menu.window = m.window
	}

	m.ensureMenuBarRedrawn()

	return
}

func (m *Menu) removeAction(action *Action, visibleChanged bool) error {
	index := m.actions.indexInObserver(action)