在 c# (wpf) 中捕获 windows 键-C#/.NET问题

Capturing the windows key in c# (wpf)(在 c# (wpf) 中捕获 windows 键)

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问题描述

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.当我的一个小孩爬到我的腿上并开始敲击琴键时，我总是启动它，当然，随机的.

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等价物)我可以在按下它时拦截它，但只有在开始菜单显示之后.

我使用的事件是 UIElement.KeyDown，到目前为止我所能想到的是:(e 是 KeyEventArgs)

 if (e.Key == Key.LWin) e.Handled = true;

但恐怕开始窗口已经显示出来了.

我已经有 1 个答案，但很想知道是否有任何 wpf 支持?

我怀疑可能无法对主开关进行编程?否则，也欢迎任何帮助..

解决方案

你需要一个键盘挂钩.不幸的是，这必须通过 P/Invoke 来完成；托管代码无法做到这一点.

查看 Scott Hanselman 的 Baby Smash!.它托管在 http://www.codeplex.com/babysmashcode plex> Github 在 https://github.com/shanselman/babysmash

或者，查看 CodeProject 上的 ShapeShow，类似.p>

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.

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.

The event I use is the UIElement.KeyDown and all I could came up with so far is : (the e being KeyEventArgs)

            if (e.Key == Key.LWin) e.Handled = true;

but than the start window is already showing I'm afraid.

I have already 1 answer but would very much like to know if there's any wpf-support?

I suspect programming the main on/off switch might not be possible? Otherwise, any help there would be welcome too..

解决方案

You'll need a keyboard hook. Unfortunately, this has to be done with P/Invoke; it can't be done with managed code.

Check out Baby Smash! by Scott Hanselman. It's hosted on ~~code plex at http://www.codeplex.com/babysmash~~ Github at https://github.com/shanselman/babysmash

Alternatively, check out ShapeShow on CodeProject, which is similar.

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