suppress warnings about hiding virtual functions in wxURLDataObject

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52738 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/dataobj2.h

@@ -100,13 +100,27 @@ public:
 
     wxString GetURL() const { return m_url; }
     void SetURL(const wxString& url) { m_url = url; }
-    
-private:
-    wxString m_url;
 
     virtual size_t GetDataSize() const;
     virtual bool GetDataHere(void *buf) const;
     virtual bool SetData(size_t len, const void *buf);
+
+    // Must provide overloads to avoid hiding them (and warnings about it)
+    virtual size_t GetDataSize(const wxDataFormat&) const
+    {
+        return GetDataSize();
+    }
+    virtual bool GetDataHere(const wxDataFormat&, void *buf) const
+    {
+        return GetDataHere(buf);
+    }
+    virtual bool SetData(const wxDataFormat&, size_t len, const void *buf)
+    {
+        return SetData(len, buf);
+    }
+
+private:
+    wxString m_url;
 };