C# WPF 键持有

Question

我的按键有问题。只需按下即可一切正常，但按键又如何呢？代码如下所示:

private void Window_KeyDown(object sender, KeyEventArgs e)
{
    if (e.Key == Key.Left || e.Key == Key.Right || e.Key == Key.Up || e.Key == Key.Down)
    {
       moveBall(3);
    }
}

感谢回复。

Answer 1

WPF KeyEventArgs 类 has an IsRepeat property如果按住键，则为真。

文章中的示例:

// e is an instance of KeyEventArgs.
// btnIsRepeat is a Button.
if (e.IsRepeat)
{
    btnIsRepeat.Background = Brushes.AliceBlue;
}