A little better failure message

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@28073 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/control.cpp

@@ -150,7 +150,7 @@ bool wxControl::MSWCreateControl(const wxChar *classname,
     if ( !m_hWnd )
     {
         wxLogDebug(wxT("Failed to create a control of class '%s'"), classname);
-        wxFAIL_MSG(_T("something is very wrong"));
+        wxFAIL_MSG(_T("something is very wrong, CreateWindowEx failed"));
 
         return FALSE;
     }