TreeView Signal Problem

[John Taber <jtaber johntaber net>]

Not my day with TreeView:)  The TreeView signals do not appear to be sent - 
the text output does not appear when I click on any of the tree rows.  All my 
button signals work fine.  I tried to follow the tree example - any ideas?

virtual void menuTreeOnClicked(const Gtk::TreeModel::Path& path, 
        Gtk::TreeViewColumn* column);
.....
menuTreeView.signal_row_activated().connect(sigc::mem_fun(*this, 
        &NewStartupDialog::menuTreeOnClicked) );
......
void NewStartupDialog::menuTreeOnClicked(const Gtk::TreeModel::Path& path, 
        Gtk::TreeViewColumn*) {
  std::cout << "Test Tree Click" << std::endl;

John
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