public void ChangeMode( string mode )
{
if( KeyboardContext.CurrentKeyboard != null )
{
IKeyboardMode kbMode = KeyboardContext.ObtainMode( mode );
KeyboardContext.CurrentKeyboard.CurrentMode = kbMode;
if( ModeChangedByCommandHandler != null ) ModeChangedByCommandHandler( this, new ModeChangedEventArgs( kbMode ) );
}
}