Invalid UTF-8 string being sent to callback function on "toggled" signal from GtkCellRendererToggle

["Justin Stallard" <darkfloyd7 gmail com>]

Hi,

The subject pretty much says it all. The tree path string that is
being sent to my callback function as a result of the "toggled" signal
from a GtkCellRendererToggle in a GtkTreeView is an "Invalid path".
The following is the output to the terminal upon toggling one of the
GtkCellRendererToggle(s), followed by the code that will reproduce
this problem. What am I doing wrong?

Thank you,
-Justin


Terminal output:

[Invalid UTF-8]
\x8bU\x08\x8bM\x08\x0f\xb6B\x02\x89\xc2\x0f\xb6A\x01\x83\xe2\x01\x8dz\xff\xc0\xe8\x07\x83\xff\xfft*\x0f\xb6\xc0\x8d\x04P\x8d4\xc5\xf8\xff\xff\xff\x8bM\x08\x89\xf2O\x83\xee\x08\x03Q\x0c\x89L$\x04\x8b\x02\x89\x04$\xffR\x04\x83\xff\xffu\xe3\x0f\xb6E\xcb\x83\xe0\x01\x89\xc6\xc1\xe6\x06\x8dv

(keyboard:20321): Gtk-WARNING **: gtktreemodel.c:440: Invalid path
\x8bU\u0008\x8bM\u0008\u000f\xb6B\u0002\x89\xc2\u000f\xb6A\u0001\x83\xe2\u0001\x8dz\xff\xc0\xe8\u0007\x83\xff\xfft*\u000f\xb6\xc0\x8d\u0004P\x8d4\xc5\xf8\xff\xff\xff\x8bM\u0008\x89\xf2O\x83\xee\u0008\u0003Q\u000c\x89L$\u0004\x8b\u0002\x89\u0004$\xffR\u0004\x83\xff\xffu\xe3\u000f\xb6E?\xe0\u0001\x89\xc6\xc1\xe6\u0006\x8dv
passed to gtk_tree_path_new_from_string


Code:

#include <gtk/gtk.h>

GtkTreeStore *treestore;

void on_cell_renderer_toggle_toggled(GtkCellRendererToggle w,
                                    const gchar *path_string,
                                    gpointer data)
{
   GtkTreePath *path;
   GtkTreeIter iter;
   gboolean oldval;
   gboolean tmp;

   g_print("%s\n", path_string);
   path = gtk_tree_path_new_from_string(path_string);
}

int main(int argc, char *argv[])
{
   GtkWidget *window;
   GtkWidget *treeview;
   GtkCellRenderer *render;
   GtkTreeViewColumn *column;
   GtkTreeIter iter[3];

   gtk_init (&argc, &argv);

   /* create the treeview */
   treeview = gtk_tree_view_new();

   /* set up the tree model */
   treestore = gtk_tree_store_new(1, G_TYPE_BOOLEAN);
   gtk_tree_view_set_model(GTK_TREE_VIEW(treeview), GTK_TREE_MODEL(treestore));

   /* put some data in it */
   gtk_tree_store_append(treestore, iter, NULL);
   gtk_tree_store_set(treestore, iter, 0, TRUE, -1);
   gtk_tree_store_append(treestore, iter + 1, iter);
   gtk_tree_store_set(treestore, iter + 1, 0, TRUE, -1);
   gtk_tree_store_append(treestore, iter + 2, NULL);
   gtk_tree_store_set(treestore, iter + 2, 0, TRUE, -1);

   /* set up the column */
   column = gtk_tree_view_column_new();
   render = gtk_cell_renderer_toggle_new();
   gtk_tree_view_column_pack_start(column, render, TRUE);
   gtk_tree_view_column_set_attributes(column, render, "active", 0, NULL);

   gtk_tree_view_append_column(GTK_TREE_VIEW(treeview), column);

   /* signal handler for the cell renderer */
   g_signal_connect(render, "toggled",
                    G_CALLBACK(on_cell_renderer_toggle_toggled), NULL);


   /* create the window, put the tree view in it, and show */
   window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

   gtk_container_add(GTK_CONTAINER(window), treeview);

   gtk_widget_show_all(window);

   gtk_main ();

   return 0;
}