#ifdeffed new paint clipping :-(

Moved replacement code to printing preview canvas where
    its effect was particularly useful.
  Completed GC pooling.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6240 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/prntbase.cpp

@@ -195,6 +195,11 @@ void wxPreviewCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
     wxPaintDC dc(this);
     PrepareDC( dc );
 
+#ifdef __WXGTK__
+    if (!GetUpdateRegion().IsEmpty())
+        dc.SetClippingRegion( GetUpdateRegion() );
+#endif
+
     if (m_printPreview)
     {
         m_printPreview->PaintPage(this, dc);