在10.5或更早版本上这是它的路径，因此可以像平常一样启动它：

On 10.5 and earlier here's the path to it so just launch it like normal:

/System/Library/Components/KeyboardViewer.component/Contents/SharedSupport/KeyboardViewerServer.app

在10.6及更高版本上不起作用。您将需要以下内容： http://github.com/nriley/keyboardViewer

On 10.6 and later that doesn't work. You'll need this: http://github.com/nriley/keyboardViewer