Re: seg fault creating a column to append to a treeview

[Robert Caryl <bob fis-cal com>]

You state the cited code works in another application where the only 
difference between the two is that the non seg faulting application "is 
the main window graphic interface done with glade", yet the gdb output 
from the seg-faulthing application makes reference to Glade in its last 
line of output. 

I would guess that, even though the value of m_ptvConnections is not 
NULL at runtime, it has not been properly initialized. 

Bob

Angelo Dureghello wrote:
> hi all,
>
> i'm quite new to gtkmm-2.4, i receive a seg fault creating a column to 
> append to a treeview. This is the involved code:
>
> on .h:
>
> class WndMain : public Gtk::Window
> {
>     ....
>
>  typedef Glib::RefPtr<Gdk::Pixbuf> refpix;
>  typedef Glib::RefPtr<Gtk::ListStore> reflst;
>  class ModelColumns : public Gtk::TreeModelColumnRecord
>    {
>    public:
>       ModelColumns()
>       {
>             add(m_colState);
>             add(m_colIcon);
>          add(m_colSignature);
>          add(m_colSerial);
>       }
>         Gtk::TreeModelColumn<int>                m_colState;
>         Gtk::TreeModelColumn<refpix>            m_colIcon;
>       Gtk::TreeModelColumn<Glib::ustring>    m_colSignature;
>       Gtk::TreeModelColumn<Glib::ustring>    m_colSerial;
>    };
>
>     reflst                    m_rListStore;
>     Gtk::TreeView          *m_ptvConnections;
>
>     const ModelColumns   m_Columns;
>     ...
> };
>
> on cpp:
>
>     ....
>
>     if (m_ptvConnections)
>     {
>       m_rListStore = Gtk::ListStore::create(m_Columns);
>       m_ptvConnections->set_model(m_rListStore);
>
>
>       m_ptvConnections->append_column("test", m_Columns.m_colState); <-- 
> this give seg fault
>     }
>
>
> Same code is working in another application, where the only difference 
> is the main window graphic interface done with glade.
> Gdb is telling these informations:
>
> Gtk::Object::Object 
> (this=0x2876158,__vtt_parm=0x45891c,construct_params= 0x22fb60)    
> object.cc 214
> Gtk::Object::Object 
> (this=0x2876158,__vtt_parm=0x458918,construct_params= 0x22fb60)    
> object.cc 35
> _fu1____ZTTN3Gtk14TreeViewColumnE   ()
> Gtk::TreeView::append_column<int> (this=0x28759f0, 
> title= 0x22fce0,model_column= 0x28757e4))
> WndMain::WndMain    (this=0x28759f0,cobject=0x279a0e0,refGlade= 0x22fde0)
>
>
> If any help, many thanks, Angelo
>
>
>
> _______________________________________________
> gtkmm-list mailing list
> gtkmm-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtkmm-list
>
>
>