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guillermohurta · Joined: 11 Mar 2008 Posts: 4

I hope somebody finds helpful this function. I use it to sort columns of a GtkTreeView:

Code: (Plaintext)

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gint sort_function (GtkTreeModel *model,GtkTreeIter *a,GtkTreeIter *b, gpointer userdata)
{
gint sortcol = GPOINTER_TO_INT(userdata);
gint ret = 0;
switch (sortcol)
{
case SORT_COLUMN_X:
{
gchar *name1, *name2;
gtk_tree_model_get(model, a, COLUMN_X &name1, -1);
gtk_tree_model_get(model, b, COLUMN_X, &name2, -1);
if (name1 == NULL || name2 == NULL)
{
if (name1 == NULL && name2 == NULL)
break; /* both equal => ret = 0 */
ret = (name1 == NULL) ? -1 : 1;
}
else
{
ret = g_utf8_collate(name1,name2);
}
g_free(name1);
g_free(name2);
}
break;

case SORT_COLUMN_Y:
{
gchar *name1, *name2;
gtk_tree_model_get(model, a, SORT_COLUMN_Y, &name1, -1);
gtk_tree_model_get(model, b, SORT_COLUMN_Y &name2, -1);
if (name1 == NULL || name2 == NULL)
{
if (name1 == NULL && name2 == NULL)
break; /* both equal => ret = 0 */
ret = (name1 == NULL) ? -1 : 1;
}
else
{
ret = g_utf8_collate(name1,name2);
}
g_free(name1);
g_free(name2);
}
break;

default:
g_return_val_if_reached(0);
}
return ret;
}/* sort_function */