检测KeyRoutedEventArgs事件中是否按下了修改键

Question

我有以下代码:

public void tbSpeed_KeyDown(object sender, KeyRoutedEventArgs e)
{
    e.Handled = !((e.Key >= 48 && e.Key <= 57) || (e.Key >= 96 && e.Key <= 105) || (e.Key == 109) || (e.Key == 189));
}

有没有办法检测是否正在按任何修改键如Shift？

Answer 1

使用GetKeyState.例如

var state = CoreWindow.GetForCurrentThread().GetKeyState(VirtualKey.Shift);
return (state & CoreVirtualKeyStates.Down) == CoreVirtualKeyStates.Down;

注意:对于Alt,您将使用VirtualKey.Menu.

Answer 2

对于Win10 UWP，我注意到CTRL和SHIFT键设置为“锁定”状态。所以我做了以下事情：

var shiftState = CoreWindow.GetForCurrentThread().GetKeyState(VirtualKey.Shift);
var ctrlState = CoreWindow.GetForCurrentThread().GetKeyState(VirtualKey.Control);

var isShiftDown = shiftState != CoreVirtualKeyStates.None;
var isCtrlDown = ctrlState != CoreVirtualKeyStates.None;