C# (CSharp) System VirtualKey Examples

Example #1

File: InteractionHelper.cs Project: ndhelix/OpenSilver

        public static System.VirtualKey GetLogicalKey(FlowDirection flowDirection, System.VirtualKey originalKey)
        {
            System.VirtualKey result = originalKey;
            if (flowDirection == FlowDirection.RightToLeft)
            {
                switch (originalKey)
                {
                case System.VirtualKey.Left:
                    result = System.VirtualKey.Right;
                    break;

                case System.VirtualKey.Right:
                    result = System.VirtualKey.Left;
                    break;
                }
            }
            return(result);
        }

Example #2

        protected override void OnKeyDown(KeyRoutedEventArgs e)
#endif
        {
            base.OnKeyDown(e);

            if (e.Handled || !IsEnabled)
            {
                return;
            }

            // Some keys (e.g. Left/Right) need to be translated in RightToLeft mode
#if WORKINPROGRESS
#if MIGRATION
            Key invariantKey = InteractionHelper.GetLogicalKey(FlowDirection, e.Key);
#else
            System.VirtualKey invariantKey = InteractionHelper.GetLogicalKey(FlowDirection, e.Key);
#endif
#else
#if MIGRATION
            Key invariantKey = InteractionHelper.GetLogicalKey(FlowDirection.LeftToRight, e.Key);
#else
            System.VirtualKey invariantKey = InteractionHelper.GetLogicalKey(FlowDirection.LeftToRight, e.Key);
#endif
#endif

            bool isExpanded = IsExpanded;
            switch (ExpandDirection)
            {
            case ExpandDirection.Down:
#if MIGRATION
                if ((isExpanded && invariantKey == Key.Up) || (!isExpanded && invariantKey == Key.Down))
#else
                if ((isExpanded && invariantKey == System.VirtualKey.Up) || (!isExpanded && invariantKey == System.VirtualKey.Down))
#endif
                {
                    IsExpanded = !isExpanded;
                }
                break;

            case ExpandDirection.Up:
#if MIGRATION
                if ((isExpanded && invariantKey == Key.Down) || (!isExpanded && invariantKey == Key.Up))
#else
                if ((isExpanded && invariantKey == System.VirtualKey.Down) || (!isExpanded && invariantKey == System.VirtualKey.Up))
#endif
                {
                    IsExpanded = !isExpanded;
                }
                break;

            case ExpandDirection.Left:
#if MIGRATION
                if ((isExpanded && invariantKey == Key.Right) || (!isExpanded && invariantKey == Key.Left))
#else
                if ((isExpanded && invariantKey == System.VirtualKey.Right) || (!isExpanded && invariantKey == System.VirtualKey.Left))
#endif
                {
                    IsExpanded = !isExpanded;
                }
                break;

            case ExpandDirection.Right:
#if MIGRATION
                if ((isExpanded && invariantKey == Key.Left) || (!isExpanded && invariantKey == Key.Right))
#else
                if ((isExpanded && invariantKey == System.VirtualKey.Left) || (!isExpanded && invariantKey == System.VirtualKey.Right))
#endif
                {
                    IsExpanded = !isExpanded;
                }
                break;
            }
        }

Example #3

 public CoreVirtualKeyStates GetKeyState(System.VirtualKey virtualKey)
 => CoreVirtualKeyStates.None;