GTKButton with GtkListStore - c

Question

I tried to add GTKButton to a GtkListStore to edit data in each row... The button doesn't appear, and i get this error message : "GLib-GObject-WARNING **: unable to set property text' of typegchararray' from value of type `GtkButton'".
here is my code :
#include <gtk/gtk.h>
GtkTreeModel * create_and_fill_model()
{
GtkListStore *store;
GtkTreeIter iter;
store = gtk_list_store_new (9,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_UINT,
G_TYPE_FLOAT,
GTK_TYPE_BUTTON);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
0, "A5525654",
1, "DFFFCCN",
2, "Doe",
3, "John",
4, "M",
5, "casablanca",
6, 2014,
7, 18.22,
8,GTK_BUTTON(gtk_button_new_with_label("EDIT")),
-1);
return GTK_TREE_MODEL (store);
}
GtkWidget * create_view_and_model()
{
GtkCellRenderer *renderer;
GtkTreeModel *model;
GtkWidget *view;
view = gtk_tree_view_new ();
char colonne[9][16] =
{
"CIN",
"CNE",
"Nom",
"Prenom",
"Sexe",
"Etablissement",
"Annee Obt",
"Note Gener",
"Edit"
};
int i;
for(i=0; i<9; i++)
{
renderer = gtk_cell_renderer_text_new ();
gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (view),
-1,
colonne[i],
renderer,
"text", i,
NULL);
}
model = create_and_fill_model ();
gtk_tree_view_set_model (GTK_TREE_VIEW (view), model);
g_object_unref (model);
return view;
}
int main (int argc, char **argv)
{
GtkWidget *window;
GtkWidget *view;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, "delete_event", gtk_main_quit, NULL);
view = create_view_and_model ();
gtk_container_add (GTK_CONTAINER (window), view);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}

Answer 1

Source code that works:
#include <gtk/gtk.h>
GtkTreeModel * create_and_fill_model()
{
GtkListStore *store;
GdkPixbuf *icon;
GError *error = NULL;
GtkTreeIter iter;
store = gtk_list_store_new (9,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_UINT,
G_TYPE_FLOAT,
GDK_TYPE_PIXBUF);
gtk_list_store_append (store, &iter);
icon = gdk_pixbuf_new_from_file("edit.png", &error);
gtk_list_store_set (store, &iter,
0, "A5525654",
1, "DFFFCCN",
2, "Doe",
3, "John",
4, "M",
5, "casablanca",
6, 2014,
7, 18.22,
8,icon,
-1);
if (error)
{
g_warning ("probleme de chargement de l'icone : %s\n", error->message);
g_error_free(error);
error = NULL;
}
return GTK_TREE_MODEL (store);
}
GtkWidget * create_view_and_model()
{
GtkCellRenderer *renderer;
GtkTreeModel *model;
GtkWidget *view;
view = gtk_tree_view_new ();
char colonne[9][16] =
{
"CIN",
"CNE",
"Nom",
"Prenom",
"Sexe",
"Etablissement",
"Annee Obt",
"Note Gener",
"Edit"
};
int i;
for(i=0; i<9; i++)
{
if(i==8)
{
renderer = gtk_cell_renderer_pixbuf_new();
gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (view),
-1,
colonne[i],
renderer,
"pixbuf", i,
NULL);
}
else
{
renderer = gtk_cell_renderer_text_new ();
gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (view),
-1,
colonne[i],
renderer,
"text", i,
NULL);
}
}
model = create_and_fill_model ();
gtk_tree_view_set_model (GTK_TREE_VIEW (view), model);
g_object_unref (model);
return view;
}
int main (int argc, char **argv)
{
GtkWidget *window;
GtkWidget *view;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, "delete_event", gtk_main_quit, NULL);
view = create_view_and_model ();
gtk_container_add (GTK_CONTAINER (window), view);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}

Answer 2

Your implementation of placing a button in tree view cannot work as written. You are creating a text renderer for all the columns, and a text renderer obviously cannot draw a GTK button. (You get the error while setting the text property on the renderer based on a button-typed column in the model.)
One simple way of placing a button in a tree view is by putting a clickable image in the cell, as shown by this answer.