Users of my application have a second keyboard with special function keys. Unfortunately, the keys are mapped to buttons such as F, G, F1 and so on. I would like to handle PreviewKeyDown and prevent any keys from these keyboards having an effect in normal controls such as TextBoxes. Users of my application have a second keyboard
阅读背景：
我可以确定按下的键所在的键盘吗？
来源：互联网
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