For more information about this feature, see the WM_CHANGEUISTATE, WM_QUERYUISTATE, and WM_UPDATEUISTATE topics in the MSDN library at http://msdn.microsoft.com/library.
Notes to Inheritors
When overriding the ShowFocusCues property in a derived class, use the base class's ShowFocusCues property to extend the base implementation. Otherwise, you must provide all the implementation.
Windows 2000, Windows XP Home Edition, Windows XP Professional x64 Edition, Windows Server 2003 Platform Note: Setting the ShowFocusCues property to true causes controls to conform to the Windows 2000 behavior that hides focus cues until the user performs a keyboard action.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)