Microsoft.Windows.Controls.Ribbon.RibbonMenuButton.BaseOnIsKeyboardFocusWithin C# (CSharp) Метод

        private void BaseOnIsKeyboardFocusWithin()
        {
            if (!PseudoIsKeyboardFocusWithin && IsKeyboardFocusWithin)
            {
                PseudoIsKeyboardFocusWithin = true;
                DependencyPropertyChangedEventArgs eventArgs = new DependencyPropertyChangedEventArgs(IsKeyboardFocusWithinProperty, false, true);
                base.OnIsKeyboardFocusWithinChanged(eventArgs);
            }
        }