+IMPLEMENT_DYNAMIC_CLASS(wxGDIObject, wxObject)
+
+
+WXDLLIMPEXP_DATA_CORE(wxBrushList*) wxTheBrushList;
+WXDLLIMPEXP_DATA_CORE(wxFontList*) wxTheFontList;
+WXDLLIMPEXP_DATA_CORE(wxPenList*) wxThePenList;
+
+WXDLLIMPEXP_DATA_CORE(wxColourDatabase*) wxTheColourDatabase;
+
+WXDLLIMPEXP_DATA_CORE(wxBitmap) wxNullBitmap;
+WXDLLIMPEXP_DATA_CORE(wxBrush) wxNullBrush;
+WXDLLIMPEXP_DATA_CORE(wxColour) wxNullColour;
+WXDLLIMPEXP_DATA_CORE(wxCursor) wxNullCursor;
+WXDLLIMPEXP_DATA_CORE(wxFont) wxNullFont;
+WXDLLIMPEXP_DATA_CORE(wxIcon) wxNullIcon;
+WXDLLIMPEXP_DATA_CORE(wxPen) wxNullPen;
+#if wxUSE_PALETTE
+WXDLLIMPEXP_DATA_CORE(wxPalette) wxNullPalette;