Registers the IKeyboardInputSink interface of a contained component.
[UIPermissionAttribute(SecurityAction.LinkDemand, Unrestricted = true)]
Components with child components should maintain internal collections of sites and use this method to add a new sink and return the new site. You only need to maintain the site collection, because the sink can be obtained from the site.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2