+ // and because our z-ordering is not always correct (staticboxes)
+ // we have to invalidate things, we cannot simple redraw
+ RgnHandle updateInner = NewRgn() , updateOuter = NewRgn() ;
+ RectRgn( updateInner , &rect ) ;
+ InsetRect( &rect , -4 , -4 ) ;
+ RectRgn( updateOuter , &rect ) ;
+ DiffRgn( updateOuter , updateInner ,updateOuter ) ;
+ wxPoint parent(0,0);
+ GetParent()->MacWindowToRootWindow( &parent.x , &parent.y ) ;
+ parent -= GetParent()->GetClientAreaOrigin() ;
+ OffsetRgn( updateOuter , -parent.x , -parent.y ) ;
+ GetParent()->m_peer->SetNeedsDisplay( true , updateOuter ) ;
+ DisposeRgn(updateOuter) ;
+ DisposeRgn(updateInner) ;