Re: Menu Implementation problem

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

Murray Cumming wrote:

> On Wed, 2006-04-26 at 09:51 +0400, Andrew E. Makeev wrote:
>  
>
> > 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.
> >    
>
> I recommend valgrind to debug memory management problems. And if you
> think there's a problem in gtkmm itself, please provide a test case.
>
>  
Test case for menu craches attached to bugzilla issue # 104194:

http://bugzilla.gnome.org/show_bug.cgi?id=3D104194