在 WPF 应用程序上跟踪按键和按键释放

Question

有没有办法跟踪 WPF 上的按键按下和释放操作？

这是我到目前为止尝试过的方法，但我发现 _upDownKeyIsPressed 仅在我按下另一个键时才设置为 false - 而不是在释放向上或向下键时

    private void KeyUpPress(KeyEventArgs e)
    {
        if (e.Key == Key.Up || e.Key == Key.Down)
        {
            _upDownKeyIsPressed = true;
            Console.WriteLine(_upDownKeyIsPressed.ToString());
        }
    }

    private void KeyDownPress(KeyEventArgs e)
    {
        if (e.Key == Key.Up || e.Key == Key.Down)
        {
            _upDownKeyIsPressed = false;
            Console.WriteLine(_upDownKeyIsPressed.ToString());
        }
    }

    private void PlotListView_KeyUp(object sender, KeyEventArgs e)
    {
        KeyUpPress(e);
    }

    private void PlotListView_KeyDown(object sender, KeyEventArgs e)
    {
        KeyDownPress(e);
    }

Answer 1

如果你想试试我评论里说的。我在想这样的事情：

    private void PlotListView_KeyUp(object sender, KeyEventArgs e)
    {
        TrackUpDownKeyPress(e, false);
    }

    private void PlotListView_KeyDown(object sender, KeyEventArgs e)
    {
        TrackUpDownKeyPress(e, true);
    }

    private void TrackUpDownKeyPress(KeyEventArgs e, bool isPressed)
    {
        if (e.Key == Key.Up || e.Key == Key.Down)
            _upDownKeyIsPressed = isPressed;
    }

如果您想了解有关 keyUp 和 keyDown 之间区别的更多信息，请查看此 question。

在 WPF 应用程序上跟踪按键和按键释放

Track key press and key release on WPF applications

c#

wpf