Hi Rob,
The trick here is to use gtk_tree_model_filter_convert_iter_to_child_iter().
That will get the iter that you need. It will work the same on both GTK2 and
GTK3. You have to be a little careful with gtk_tree_model_foreach(). It is easy
to add nodes and then the function will check everyone of the additional nodes.
Eric
gboolean func(GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter,
gpointer data)
{
//Test counter for nodes.
static gint i=0;
GtkTreeIter parent;
GtkTreeIter child_iter;
GtkTreeIter node;
if(!gtk_tree_model_iter_parent(model, , iter))
{
if(!gtk_tree_model_iter_has_child(model, iter))
{
g_print("Child %i\n", i);
gtk_tree_model_filter_convert_iter_to_child_iter(GTK_TREE_MODEL_FILTER(model),
_iter, iter);
gtk_tree_store_append(store, , _iter);
gtk_tree_store_set(store, , 0, "child", -1);
}
}
i++;
return FALSE;
}
-Original Message-
From: Rob Alblas
To: gtk-app-devel-list
Sent: Wed, May 24, 2017 5:57 am
Subject: gtktree: combination filter and using gtk_tree_model_foreach
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, , -1);
...
gtk_tree_store_append(stree, , 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.)
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
