diff --git a/include/wx/mac/carbon/dcclient.h b/include/wx/mac/carbon/dcclient.h
index def0ad4cc3..4fc84defdd 100644
--- a/include/wx/mac/carbon/dcclient.h
+++ b/include/wx/mac/carbon/dcclient.h
@@ -36,6 +36,11 @@ class WXDLLEXPORT wxWindowDC: public wxDC
   protected :
     virtual void DoGetSize( int *width, int *height ) const;
     wxWindow     *m_window;
+#if wxMAC_USE_CORE_GRAPHICS
+	bool		m_release;
+	int			m_width;
+	int			m_height;
+#endif
 };
 
 
@@ -52,7 +57,9 @@ class WXDLLEXPORT wxClientDC: public wxWindowDC
   virtual ~wxClientDC(void);
 
 protected:
+#if !wxMAC_USE_CORE_GRAPHICS
   virtual void DoGetSize( int *width, int *height ) const;
+#endif
 };
 
 class WXDLLEXPORT wxPaintDC: public wxWindowDC
@@ -68,7 +75,9 @@ class WXDLLEXPORT wxPaintDC: public wxWindowDC
   virtual ~wxPaintDC(void);
 
 protected:
+#if !wxMAC_USE_CORE_GRAPHICS
   virtual void DoGetSize( int *width, int *height ) const;
+#endif
 };
 
 #endif
diff --git a/include/wx/mac/carbon/dcscreen.h b/include/wx/mac/carbon/dcscreen.h
index 4e2ed0511f..891444cbf4 100644
--- a/include/wx/mac/carbon/dcscreen.h
+++ b/include/wx/mac/carbon/dcscreen.h
@@ -28,6 +28,10 @@ class WXDLLEXPORT wxScreenDC: public wxWindowDC
   static bool StartDrawingOnTop(wxWindow* WXUNUSED(window)) { return TRUE; }
   static bool StartDrawingOnTop(wxRect* WXUNUSED(rect) = NULL) { return TRUE; }
   static bool EndDrawingOnTop() { return TRUE; }
+ private:
+#if wxMAC_USE_CORE_GRAPHICS
+	wxUint32 m_displayId;
+#endif
 };
 
 #endif