use buffered DC again

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50565 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/datavgen.cpp

@@ -2276,8 +2276,7 @@ void wxDataViewMainWindow::ScrollTo( int rows, int column )
 void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 {
     wxDataViewModel *model = GetOwner()->GetModel();
-    //wxAutoBufferedPaintDC dc( this );
-    wxPaintDC dc(this);
+    wxAutoBufferedPaintDC dc( this );
 
     // prepare the DC
     dc.SetBackground(GetBackgroundColour());