wxDFB: fix rendering artefacts when scrolling wxScrolledWindow that contains other widgets

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44290 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/statusbr.h

@@ -97,6 +97,8 @@ public:
     // don't want status bars to accept the focus at all
     virtual bool AcceptsFocus() const { return false; }
 
+    virtual bool CanBeOutsideClientArea() const { return true; }
+
 protected:
     // set the widths array to NULL
     void InitWidths();