+
+void MyFrame::OnClearLogUpdateUI(wxUpdateUIEvent& event)
+{
+ // if we only enable this item when the log window is empty, we never see
+ // it in the disable state as a message is logged whenever the menu is
+ // opened, so we disable it if there is not "much" text in the window
+ event.Enable( m_textctrl->GetNumberOfLines() > 5 );
+}
+
+#endif // USE_LOG_WINDOW