With the exceptions of DnD, wxGTk now works with

both GTK 1.0.6 and GTK 1.2.1 - the latter still
  produces warnings and blah.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2021 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/app.cpp

@@ -287,9 +287,11 @@ void wxApp::OnIdle( wxIdleEvent &event )
 
     inOnIdle = TRUE;
 
+#if wxUSE_THREADS
     /* Resend in the main thread events which have been prepared in other
        threads */
     ProcessPendingEvents();
+#endif
 
     /* 'Garbage' collection of windows deleted with Close(). */
     DeletePendingObjects();