Re: Gtk::Menu label not showing up after the first time displaying menu

[Robert Caryl <bob fis-cal com>]

Your constructor clearly calls Gtk::Widget::show_all_children, thereby
generating an exposure event, but what of HangarDialog::updateComponents?


/*Bob Caryl*
Fiscal Systems,Inc.
256.772.8920 Ext. 108
http://www.fis-cal.com <http://www.fis-cal.com/>/

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Jim Barnes wrote:
> Hi all,
> 
> I've having problems with Gtk::Menus and popup-menus not displaying their
> labels.  The first time that the menu is displayed, all menu labels are
> displayed properly. On subsequent displays of the menu, the popup window for
> the menu is displayed, but the window is missing the menu item labels.  When
> the mouse goes over the popup window, the labels show up one by one.  Even
> the separator lines are missing.
> 
> Here is a code snippet from my class.  Any help would be appreciated.
> 
> Thanks
> Jim
> 
> HangarDialog::HangarDialog()
>   : Gtk::Window(),
> ....
> {
>   // Set the window parameters.
>   set_title("Hangar");
>   set_resizable(true);
> 
>   const int border_width = 10;
>   set_border_width(border_width);
> 
>   // Initialize the list of dialogs to add models to the simulation.
>   add_model_dialogs[MODEL]          = 0;
>   add_model_dialogs[STATIC_MODEL]   = 0;
>   add_model_dialogs[PLAYBACK_MODEL] = 0;
> 
>   const int spacing = 5; // Spacing for formatting boxes.
> 
>   // Create the vertical packing box into which all objects will be placed.
>   main_box = new Gtk::VBox(false, spacing);
>   assume(main_box);
>   main_box->show();
>   add(*main_box);
> 
>   // Create the model_list that will be needed for the menu
>   model_list = new PositionalModelList;
> 
>   // Create the Menu interface
>   // Create a reference action group
>   ref_action_group = Gtk::ActionGroup::create();
> 
>   // Define the actions
>   ref_action_group->add(Gtk::Action::create("SimMenu", "_Simulation"));
>   ref_action_group->add(
>     Gtk::Action::create("SimControl",
>                         "Sim Control",
>                         "Modify simulation configuration."),
>     sigc::mem_fun(this, &HangarDialog::showSimControlDialog));
>   ref_action_group->add(
>     Gtk::Action::create("SimEnvironment",
>                         "Environment",
>                         "Modify the simulation environment."),
>     sigc::mem_fun(this, &HangarDialog::showEnvironmentDialog));
> 
>   ref_action_group->add(
>     Gtk::Action::create("SimClose",
>                         "Close Hanger", "Close this dialog."),
>     sigc::mem_fun(this, hide));
> 
> (bunch more menus.....)
> 
>   ref_action_group->add(Gtk::Action::create("HelpMenu", Gtk::Stock::HELP,
> "Help"));
> 
>   // Create a ui_manager
>   ui_manager = Gtk::UIManager::create();
> 
>   // Insert the the ActionGroup
>   ui_manager->insert_action_group(ref_action_group);
> 
>   // Layout the actions in a menubar
>   try
>   {
>     Glib::ustring ui_info =
>       "<ui>"
>       "  <menubar name='Menubar'>"
>       "    <menu action='SimMenu'>"
>       "      <menuitem action='SimControl'/>"
>       "      <menuitem action='SimEnvironment'/>"
>       "      <separator/>"
>       "      <menuitem action='SimClose'/>"
>       "    </menu>"
>       "    <menu action='ModelsMenu'>"
>       "      <menu action='ModelsAddMenu'>"
>       "        <menuitem action='AddModel'/>"
>       "        <menuitem action='AddPlayback'/>"
>       "        <menuitem action='AddStatic'/>"
>       "        </menu>"
>       "      <menuitem action='ModelsDelete'/>"
>       "    </menu>"
>       "    <menu action='HardwareMenu'>"
>       "      <menuitem action='HardwareDrivers'/>"
>       "      <menuitem action='HardwareInterfaces'/>"
>       "      <menuitem action='HardwareChangeSelected'/>"
>       "    </menu>"
>       "    <menu action='HelpMenu'>"
>       "    </menu>"
>       "  </menubar>"
>       "</ui>";
> 
>     ui_manager->add_ui_from_string(ui_info);
>   }
>   catch ( const Glib::Error& ex)
>   {
>     string error = "Buiding Menu Bar faild: " + ex.what();
>     TerminalIO::applicationError("PlotMenuBarFactory::PlotMenuBarFactory()",
>                                  error.c_str(), false, true);
>   }
> 
>   // Add the menubar to the vbox
>   Gtk::Widget* menu_bar = ui_manager->get_widget("/Menubar");
> 
>   if (menu_bar)
>   {
>     main_box->pack_start(*menu_bar, Gtk::PACK_SHRINK);
>   }
> 
> ...
> 
>   show_all_children();
> 
>   // Every 10 ms update the components of this dialog.
>   const int update_period_in_milliseconds = 10;
>   Glib::signal_timeout().
>     connect(sigc::mem_fun(this, &HangarDialog::updateComponents),
>             update_period_in_milliseconds);
> }
> 
> 
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