+ NSResponder * responder = wxNonOwnedWindowCocoaImpl::GetNextFirstResponder();
+ NSView* otherView = [responder isKindOfClass:[NSView class]] ? (NSView*)responder : nil;
+
+ wxWidgetImpl* otherWindow = impl->FindFromWXWidget(otherView);
+ impl->DoNotifyFocusEvent( false, otherWindow );