<p>I'm building an application in C# using WPF. How can I bind to some keys?</p>

<p>Also, how can I bind to the <a href="http://en.wikipedia.org/wiki/Windows_key" rel="noreferrer">Windows key</a>?</p>

I'm not sure about WPF, but this may help. I used the solution described in
RegisterHotKey (user32)
(modified to my needs of course) for a C# Windows Forms application to assign a CTRL-KEY combination within Windows to bring up a C# form, and it worked beautifully (even on Windows Vista). I hope it helps and good luck!