GTK+ Programmng Help: Last Resort!

Hi everyone,

I have a combo box in which there are a few words. I am trying to build a menu option that will generate a LaTeX file with those words, that can then be compiled to produce PDF output. For that, I need to first obtain the list of words that already in the combo box.

I checked the DevHelp documentation thoroughly; in particular, I looked at the sample programmes in the section on GtkTreeModel. The sample given there is almost exactly what I am doing here. (The only difference is that in the sample programme a new tree model is built explicitly, whereas in my code below, I am obtaining the tree model from the combo box known as WordListComboBox.) Note: The code below shows only the relevant portion.

I am at a total loss as to why the following code will not work:

Code:

---

void on_generate_tex_activate (GtkMenuItem    *menuitem, gpointer user_data)
{

  GtkTreeModel *TreeModel;
  GtkTreeIter Iter;
  gboolean Valid;

  TreeModel = gtk_combo_box_get_model(GTK_COMBO_BOX(lookup_widget(GTK_WIDGET(menuitem), "WordListComboBox")));

  Valid = gtk_tree_model_get_iter_first(GTK_TREE_MODEL(TreeModel), &Iter);

  while(Valid) {

    gchar Word[65];
    gint i;
    for(i = 0; i < 65; i++) {
      Word[i] = '\0';
    } /* End for(i) */

    gtk_tree_model_get(GTK_TREE_MODEL(TreeModel), &Iter, 0, &Word[0], -1);
    g_print("%s\n", &Word[0]);

    Valid = gtk_tree_model_iter_next(GTK_TREE_MODEL(TreeModel), &Iter);

  } /* End while() */

}

---

When I run the programme and activate the menu option, instead of seeing the words in the combo box echoed in the terminal, I get strange characters. However, the number of lines of strange characters always matches the number of words in currently in the combo box.

Can someone please tell me what I am doing incorrectly? Instead of output like:

word_1
word_2
word_3

why do I see:

..P
*Q>
>V,

Thanks in advance for your help.

Possibly because the gtk_tree_model_get requires a pointer of type gchar for the returned string as indicated in the GTK documentation.

Code:

---

        gchar *Word;   
        gtk_tree_model_get(GTK_TREE_MODEL(TreeModel), &Iter, 0, &Word, -1);
        g_print("%s\n", Word);

---

Quote:

---

Originally Posted by BobS0327

Possibly because the gtk_tree_model_get requires a pointer of type gchar for the returned string as indicated in the GTK documentation.

Code:

---

        gchar *Word;   
        gtk_tree_model_get(GTK_TREE_MODEL(TreeModel), &Iter, 0, &Word, -1);
        g_print("%s\n", Word);

---

---

Thanks for responding, Bob. But if Word is a pointer to gchar, then &Word is of type gchar**. You should get an error if you try to compile the above lines.

I believe I have the syntax right when I write:

gtk_tree_model_get(GTK_TREE_MODEL(TreeModel), &Iter, 0, &Word[0], -1);

because &Word[0] is indeed a pointer to gchar.

*****

I still have not figured out the problem. Any help would be greatly appreciated.

*****

Edit

Never mind! Thank you very much, Bob! You are right!

What a remarkable case of blindness on my part!