Recognize lack of wxTAB_TRAVERSAL style

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56022 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/propgrid/propgrid.cpp

@@ -4977,7 +4977,10 @@ void wxPropertyGrid::HandleKeyEvent(wxKeyEvent &event)
 
     if ( keycode == WXK_TAB )
     {
-        SendNavigationKeyEvent( event.ShiftDown()?0:1 );
+        if ( HasFlag(wxTAB_TRAVERSAL) )
+            SendNavigationKeyEvent( event.ShiftDown()?0:1 );
+        else
+            event.Skip();
         return;
     }