diff --git a/src/gtk1/evtloop.cpp b/src/gtk1/evtloop.cpp
index 39f129b610..d3eb76ce49 100644
--- a/src/gtk1/evtloop.cpp
+++ b/src/gtk1/evtloop.cpp
@@ -74,9 +74,18 @@ int wxGUIEventLoop::DoRun()
     // event loops.  For example, inside this event loop, we may recieve
     // Exit() for a different event loop (which we are currently inside of)
     // That Exit() will cause this gtk_main() to exit so we need to re-enter it.
-    while ( !m_shouldExit )
+#if 0
+   // changed by JJ
+   // this code was intended to support nested event loops. However,
+   // exiting a dialog will result in a application hang (because
+   // gtk_main_quit is called when closing the dialog????)
+   // So for the moment this code is disabled and nested event loops
+   // probably fail for wxGTK1
+   while ( !m_shouldExit )
     {
-        gtk_main();
+#endif
+       gtk_main();
+#if 0
     }
 
     // Force the enclosing event loop to also exit to see if it is done
@@ -89,6 +98,7 @@ int wxGUIEventLoop::DoRun()
     {
         gtk_main_quit();
     }
+#endif
 
     OnExit();
 
@@ -182,3 +192,24 @@ bool wxGUIEventLoop::YieldFor(long eventsToProcess)
 
     return true;
 }
+
+class wxGUIEventLoopSourcesManager : public wxEventLoopSourcesManagerBase
+{
+ public:
+    wxEventLoopSource *
+    AddSourceForFD(int WXUNUSED(fd),
+                   wxEventLoopSourceHandler* WXUNUSED(handler),
+                   int WXUNUSED(flags))
+    {
+        wxFAIL_MSG("Monitoring FDs in the main loop is not implemented in wxGTK1");
+
+        return NULL;
+    }
+};
+
+wxEventLoopSourcesManagerBase* wxGUIAppTraits::GetEventLoopSourcesManager()
+{
+    static wxGUIEventLoopSourcesManager s_eventLoopSourcesManager;
+
+    return &s_eventLoopSourcesManager;
+}