swaping child widgets

[Christopher Harvey <chris basementcode com>]

Hi list,

I've got a gtk Vpaned widget, and I'm trying to change the child widget in the 
second widget slot. Here is the code I'm currently using to do this.

void handleGraphChange() {
  Gtk::Widget *tmp = g_area->getSelectedNode()->createObjectInfoPanel(); 
  //tmp is owned by this scope.
  g_sceneTab->add2(*tmp);  //may or may not already have a widget.
  tmp->show_all();
  //delete previous widget and manage the new one.
  g_currentNodeInfo.reset();
  g_currentNodeInfo = boost::shared_ptr<Gtk::Widget>(tmp);
}

The behavior here is pretty strange, even though this is the only code that 
touches the 2nd part of the parent vpaned widget it only displays the added 
widget every second time one is added. Every other time the vpaned box 
disappears completely and only the 1st wigdet is displayed. 

thanks,
Chris.