Added wxFileName.

Small fix for log error messages on startup.
  Added missing accessor to wxSizer.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9013 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/app.cpp

@@ -289,7 +289,8 @@ wxApp::wxApp()
     m_topWindow = (wxWindow *) NULL;
     m_exitOnFrameDelete = TRUE;
 
-    m_idleTag = gtk_idle_add_priority( 1000, wxapp_idle_callback, (gpointer) NULL );
+    m_idleTag = 0;
+    wxapp_install_idle_handler();
 
 #if wxUSE_THREADS
     m_wakeUpTimerTag = 0;