在 c# (wpf) 中捕获 windows 键
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Capturing the windows key in c# (wpf)
提问by Peter
I have written a small program displaying sounds and images on the screen when pushing any button. I always start it when one of my little kids crawls onto my lap and start hitting the keys, of course, randomly.
我编写了一个小程序，在按下任何按钮时在屏幕上显示声音和图像。我总是在我的一个小孩爬到我腿上并开始敲击琴键时开始它，当然，这是随机的。
It works fine except for 2 keys, one of them being the ON/OFF switch, the other being the Windows-key. (the CTRL-ESC equivalent I believe) I can intercept it as it is pressed, but only after the startmenu is showing.
除了 2 个键外，它工作正常，其中一个是 ON/OFF 开关，另一个是 Windows 键。（我相信 CTRL-ESC 等效项）我可以在按下它时拦截它，但只有在开始菜单显示之后。
The event I use is the UIElement.KeyDown and all I could came up with so far is : (the e being KeyEventArgs)
我使用的事件是 UIElement.KeyDown 到目前为止我能想到的是:(e 是 KeyEventArgs）
if (e.Key == Key.LWin) e.Handled = true;
but than the start window is already showing I'm afraid.
但比开始窗口已经显示我很害怕。
I have already 1 answer but would very much like to know if there's any wpf-support?
我已经有 1 个答案，但很想知道是否有任何 wpf 支持？
I suspect programming the main on/off switch might not be possible? Otherwise, any help there would be welcome too..
我怀疑可能无法对主开关进行编程？否则，任何帮助也将受到欢迎..
采纳答案by abhilash
You'll need a keyboard hook. Unfortunately, this has to be done with P/Invoke; it can't be done with managed code.
你需要一个键盘挂钩。不幸的是，这必须通过 P/Invoke 来完成；它不能用托管代码来完成。
Check out Baby Smash!by Scott Hanselman. It's hosted on code plex at http://www.codeplex.com/babysmashGithub at https://github.com/shanselman/babysmash
看看婴儿粉碎！斯科特·汉塞尔曼。它托管在http://www.codeplex.com/babysmashGithub上的code plex上https://github.com/shanselman/babysmash
Alternatively, check out ShapeShowon CodeProject, which is similar.
或者，查看CodeProject上的ShapeShow，它是类似的。
回答by merrick
See http://msdn.microsoft.com/en-us/library/system.windows.input.key(v=VS.90).aspx
请参阅http://msdn.microsoft.com/en-us/library/system.windows.input.key(v=VS.90).aspx
At the bottom you'll see a simple example, I think what you're looking for is something along these lines:
在底部你会看到一个简单的例子，我认为你正在寻找的是这样的东西：
left windows key: System.Windows.Input.Key.LWin
左窗口键：System.Windows.Input.Key.LWin
right windows key: System.Windows.Input.Key.RWin
Windows 右键：System.Windows.Input.Key.RWin
example:
例子：
private void OnKeyDownHandler(object sender, KeyEventArgs e)
{
if (e.Key == Key.LWin) {
textBlock1.Text = "You Entered: " + textBox1.Text;
}
}
