allow passing URL to wxURLDataObject ctor

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40772 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/ole/dataobj2.h

@@ -122,7 +122,8 @@ private:
 class WXDLLEXPORT wxURLDataObject : public wxDataObjectComposite
 {
 public:
-    wxURLDataObject();
+    // initialize with URL in ctor or use SetURL later
+    wxURLDataObject(const wxString& url = wxEmptyString);
 
     // return the URL as string
     wxString GetURL() const;