GTK+ Forums

marcin · Joined: 02 Mar 2008 Posts: 1

Hi, i'm using gtk + glade + c++, my program compiles without errors,

Code: (Plaintext)
1	gcc `pkg-config gtkmm-2.4 --libs --cflags` `pkg-config --libs --cflags libglademm-2.4` -ggdb main.cc -o main

but when i run it i got "Segmentation fault (core dumped)" :-/

gdb output:

Code: (Plaintext)

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Starting program: /home/marcin/Projects/gtk2/src/main
[Thread debugging using libthread_db enabled]
[New Thread -1225648448 (LWP 11070)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1225648448 (LWP 11070)]
0xb7eb996d in Gtk::TreeView::set_model (this=0x0, model=@0xbfaef920)
at treeview.cc:1289
1289 treeview.cc: No such file or directory.
in treeview.cc
Current language: auto; currently c++
(gdb) backtrace
#0 0xb7eb996d in Gtk::TreeView::set_model (this=0x0, model=@0xbfaef920)
at treeview.cc:1289
#1 0x0804f229 in wndOkno::wndOkno ()
#2 0x08052d93 in Gnome::Glade::Xml::get_widget_derived<wndOkno> ()
#3 0x0804fe58 in main ()
(gdb) frame 0
#0 0xb7eb996d in Gtk::TreeView::set_model (this=0x0, model=@0xbfaef920)
at treeview.cc:1289
1289 in treeview.cc

so the problem is in Gtk::TreeView::set_model (i think so).

main.cc

Code: (C++)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19	#include <libglademm.h> #include <libglademm/xml.h> #include "gtk2.h" #include "gtk2.cc" int main (int argc, char argv[]) { Gtk::Main kit(argc, argv); //Load the Glade file and instiate its widgets: Glib::RefPtr<Gnome::Glade::Xml> refXml = Gnome::Glade::Xml::create("gtk2.glade"); wndOkno okno; refXml->get_widget_derived("window1", okno); Gtk::Main::run(*okno); return 0; }

gtk2.h :

Code: (C++)

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#include <gtkmm.h>

class wndOkno : public Gtk::Window {
public:
wndOkno(BaseObjectType* base_object,
const Glib::RefPtr<Gnome::Glade::Xml>& glade_xml);
virtual ~wndOkno();

// signal handlers
private:
virtual void btn_add_row_clicked();
virtual void btn_exit_clicked();
virtual void btn_srednia_clicked();

class ModelColumns: public Gtk::TreeModel::ColumnRecord {
public:
// konstruktor ModelColumns dodaje kolumny do modelu kolumn
ModelColumns() {
add(c0);
// i've cuted that part
}
// typy danych w komórkach kolumn
Gtk::TreeModelColumn<unsigned int> c0;
//this part also ;-)
};

ModelColumns mc;

// widgety potomne

Gtk::Button *btn_exit;
Gtk::Button *btn_add_row;
Gtk::Entry *entry1;
Gtk::TreeView *tv;
Glib::RefPtr<Gtk::ListStore> tmdl;
};

and gtk2.cc

Code: (C++)

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#include <iostream>
#include "gtk2.h"
#include <libglademm.h>
#include <libglademm/xml.h>

wndOkno::wndOkno(BaseObjectType* base_object,
const Glib::RefPtr<Gnome::Glade::Xml>& glade_xml) : Gtk::Window(base_object) {

//Load the Glade file and instiate its widgets:
Glib::RefPtr<Gnome::Glade::Xml> refXml =
Gnome::Glade::Xml::create("gtk2.glade");

// stworzenie modelu danych na podstawie modelu kolumn
[b]probably here is error:[/b] tmdl = Gtk::ListStore::create(mc);

// kojarzymy widok z modelem - czyli wiazemy dane z tym co widac na ekranie
[b]or here:[/b] tv->set_model(tmdl);

// dodajemy do widoku listy kolumne z numerem
tv->append_column_editable("c0", mc.c0);
//part cuted

refXml->get_widget("button3", btn_exit);
btn_exit->signal_clicked().connect(sigc::mem_fun(*this,&wndOkno::btn_exit_clicked));

refXml->get_widget("button1", btn_add_row);
btn_add_row->signal_clicked().connect(sigc::mem_fun(*this, &wndOkno::btn_add_row_clicked));

refXml->get_widget("button1", btn_srednia);
btn_add_row->signal_clicked().connect(sigc::mem_fun(*this,&wndOkno::btn_srednia_clicked));

refXml->get_widget("entry1", entry1);

// wczytanie widoku z pliku
refXml->get_widget("treeview1", tv);

}

wndOkno::~wndOkno() {

}

void wndOkno::btn_add_row_clicked(){
// stworzenie nowego rzedu w modelu danych i uzyskanie referencji do niego
Gtk::TreeModel::Row rw = *(tmdl->append());
// nadanie wartosci rw[mc.m_col_id] = 1;
rw[mc.c0] = (unsigned int)rand()%100+1;
//part cuted
}

void wndOkno::btn_exit_clicked(){
std::cout<<"Kończę super program, damn! ;-)"<<std::endl;
Gtk::Main::quit();
}

maybe someone know how to correct it :-/