在通用Windows应用程序中获取键盘状态

Question

我想检测Control-AWindows应用程序中的组合键(例如).该KeyDown事件处理程序有关最后按下的键的信息.但是如何确定Control键是否也被按下了？

Answer 1

你可以CoreVirtualKeyStates.HasFlag(CoreVirtualKeyStates.Down)用来判断是否按下了Ctrl键,就像这样 -

Window.Current.CoreWindow.KeyDown += (s, e) =>
{
    var ctrl = Window.Current.CoreWindow.GetKeyState(VirtualKey.Control);
    if (ctrl.HasFlag(CoreVirtualKeyStates.Down) && e.VirtualKey == VirtualKey.A)
    {
        // do your stuff
    }
};

Answer 2

您可以使用AcceleratorKeyActivated事件,无论焦点在何处,它都将始终捕获事件.

public MyPage()
{
    Window.Current.CoreWindow.Dispatcher.AcceleratorKeyActivated += AcceleratorKeyActivated;
}


private void AcceleratorKeyActivated(CoreDispatcher sender, AcceleratorKeyEventArgs args)
{
    if (args.EventType.ToString().Contains("Down"))
    {
        var ctrl = Window.Current.CoreWindow.GetKeyState(VirtualKey.Control);
        if (ctrl.HasFlag(CoreVirtualKeyStates.Down))
        {
            switch (args.VirtualKey)
            {
                case VirtualKey.A:
                    Debug.WriteLine(args.VirtualKey);
                    Play_click(sender, new RoutedEventArgs());
                    break;
            }
        }
    }
}