Add missing elements of wxKeyCode enum ("Windows" and "Command" keys) to the GetVirtualKeyCodeName() function in the sample. Also output "unknown" and not blank for WXK_NONE. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65524 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775