In a GtkTree I want to use a filter, and also extend the tree using
gtk_tree_model_foreach. The combination of the 2 gives problems.
In the function connected to gtk_tree_model_foreach I use the GtkTreeIter *iter
argument, which gives an error message:
Gtk-CRITICAL **: IA__gtk_tree_store_append: assertion `VALID_ITER (parent,
tree_store)' failed
I define tree, filter etc. as follows:
stree = gtk_tree_store_new(1,G_TYPE_STRING);
ftree = GTK_TREE_MODEL_FILTER(gtk_tree_model_filter_new(GTK_TREE_MODEL(stree),
NULL));
tree = gtk_tree_view_new_with_model(GTK_TREE_MODEL(ftree));
model=gtk_tree_view_get_model(GTK_TREE_VIEW(tree));
...
(build a part of the tree)
...
gtk_tree_model_foreach(model,func,NULL);
In func:
gboolean func(GtkTreeModel *model,GtkTreePath *path,GtkTreeIter *iter,gpointer
data)
{
gtk_tree_model_get(model,iter, 0, &iname, -1);
...
gtk_tree_store_append(stree, &iter0, iter);
...
}
gtk_tree_store_append gives the mentioned error.
If I remove the filter, and define instead:
tree = gtk_tree_view_new_with_model(GTK_TREE_MODEL(stree));
then building using gtk_tree_model_foreach works fine.
How to solve this?
Attached an example showing the problem.
(Note: I am using gtk2.0, don't know if the same problem is with gtk3.)
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