[Glade-users] Destroy and rebuild a treeview widget

Guillaume Ruch wrote:
Once again, thanks for your rapid answer :) In fact, like medhi, I wanted to use clist, but it's
deprecated so...  I cant really understand treeview/liststore, even with the gtk tutorials, I
think I'm in the right way, but I know I lack 2 or 3 things to make it work... Can you have a look
on this?

     You must always go to http://www.gtk.org/api/ or to /usr/include/gtk+-2.0
before randomly calling functions with improvised arguments, otherwise
people like me who just want to be helpfull find that they are doing
everybodies' work for them.

Some errors I noticed follow:


  GtkCellRenderer     *rend;
  GtkTreeViewColumn   *col;
  GtkWidget                   *listview;
  GtkListStore                *liststore;
  gchar                       *sql, *label;
  MYSQL_RES                   *res_str;
  MYSQL_FIELD                 *field;
  MYSQL_ROW                    db_row;
  gint                         i, cols;
  gchar     *row[20] = {"", "", "", "", "",
                        "", "", "", "", "",
                        "", "", ""};

sql = g_strconcat("select * from ", nom_table, 0L);
  g_print("sql is: %s\n", sql);
  if (mysql_query (conn, sql) != 0)
      g_print("Echec de la requete...\n");
      return 0L;
  res_str = mysql_store_result (conn);

/**********************Cr?ation de la liste****************/
   cols = mysql_num_fields(res_str);

   liststore= gtk_list_store_new(gint cols);

Since you are using a dynamic list store... you must use gtk_list_store_newv():
and specify the data types for the fields in your list store (in your case
G_TYPE_STRING I suppose).

   while ((db_row = mysql_fetch_row (res_str)) != 0L)
        for (i = 0; i < cols; i++)
              row[i] = db_row[i];
        gtk_list_store_append(liststore, row);

gtk_list_store_append takes a pointer to an allocated GtkTreeIter as
its second argument... the GtkTreeIter will be set to describe the newly
appended row:

     GtkTreeIter iter;

     /* append row */
     gtk_list_store_append(liststore, &iter);

     /* Fill row data in the treemodel */
     gtk_list_store_set (store, &iter,
                         column_number, column_data,
                         column_number, column_data,
                         column_number, column_data,
                         -1); // vararg terminator


/* Creation de la vue */

listview = gtk_tree_view_new_with_model(GTK_TREE_MODEL(liststore));

for (i = 0; i < cols; i++)
       mysql_field_seek(res_str, i);
       field = mysql_fetch_field(res_str);
       label = gtk_label_new (field->name);
       rend = gtk_cell_renderer_text_new();
       col = gtk_tree_view_column_new_with_attributes(label,

I believe gtk_tree_view_column_new_with_attributes() takes "const gchar *" as
the first arg... not "GtkLabel *".

       rend,"text", TEXT_COLUMN, NULL);
       gtk_tree_view_append_column(GTK_TREE_VIEW(listview), col);

    gtk_widget_show (listview)


This may display the contents of mysql_fetch_row on each row till it returns null, but I don't
know how to add data and I can't find the answer (i'm sure it's on the tutorial but...) After, a
click on  a button will remove the data and rebuild it (I hope the dynamic column creation is
right...) Content will never excess 13 columns.


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