Re: Menu Implementation problem

["Andrew E. Makeev" <andrew solvo ru>]

MERT TUGCU wrote:

> Dear All,
>
> I have a program, which has a menu implementation. It works fine 
> except when I quit, I get several warnings and sometimes segmentation 
> fault. It seems that the menu objects are not destroyed properly. 
> Would you please let me know, what I am doing wrong here? Thanks.
> Here is my menu implementation:
>
> //Fill main menu bar
> menuBar.items().push_back(Gtk::Menu_Helpers::MenuElem("File",fileMenu));
> menuBar.items().push_back(Gtk::Menu_Helpers::MenuElem("Memory",memoryMenu)); 
>
> //File menu:
> {
>     Gtk::Menu::MenuList& menulist = fileMenu.items();
>     menulist.push_back( Gtk::Menu_Helpers::MenuElem("Load", 
> trainingData_submenu) ); //Add submenu.
>     menulist.push_back( Gtk::Menu_Helpers::MenuElem("Save Training 
> Data", \
>         sigc::mem_fun(*this, &InterfaceWindow::on_menu_saveTree) ) );
>     menulist.push_back( 
> Gtk::Menu_Helpers::StockMenuElem(Gtk::Stock::QUIT, \
>         sigc::mem_fun(*this, &InterfaceWindow::on_menu_quit) ) );
> }
> //Memory menu:
> {
> Gtk::Menu::MenuList& menulist = memoryMenu.items();
>     menulist.push_back( Gtk::Menu_Helpers::MenuElem("Clear", \
>         sigc::mem_fun(*this, &InterfaceWindow::on_menu_clear) ) );
> }
> //File|Load Submenu:
> {
>     Gtk::Menu::MenuList& menulist = trainingData_submenu.items();
>     menulist.push_back( Gtk::Menu_Helpers::MenuElem("Training Data", 
> fileMenu_Load_submenu) ); /Add submenu.
>     menulist.push_back( Gtk::Menu_Helpers::MenuElem("WM Network 
> Weights",sigc::mem_fun(*this, 
> InterfaceWindow::on_menu_load_WM_Network) ) );
> }
> //File|Load|Training Data Submenu:
> {
>     Gtk::Menu::MenuList& menulist = fileMenu_Load_submenu.items();
>     menulist.push_back( Gtk::Menu_Helpers::MenuElem("All(default)", \
>     sigc::mem_fun(*this, &InterfaceWindow::on_menu_loadDefault) ) );
>     menulist.push_back( Gtk::Menu_Helpers::MenuElem("From file", \
>     sigc::mem_fun(*this, &InterfaceWindow::on_menu_loadFromFile) ) );
> }
I've noticed wrong memory management with menu bars (menu packed in some 
widget) in versions GTKMM-2.2, 2.4.
So, when you are creating Gtk::MenuBar avoid to use Gtk::manage(). Menu 
will be deleted as child widget automatically when parent container 
destroyed regardless "manage" flag. In other case, it will be destroyed 
twice.

Regards,
-andrew