On Wed, Jul 05, 2006 at 01:09:19AM +0100, Christopher Backhouse wrote:
> My previous email on this subject was rubbish and unspecific, sorry for
> the spam. So - I have reduced my code down to the smallest test case and
> now hope someone can help me.
>
> #include "gtk/gtk.h"
> int main(int argc, char **argv)
> {
> gtk_init(&argc, &argv);
>
> //make a store and view stick them together, add a column
> GtkListStore* store=gtk_list_store_new(1,G_TYPE_STRING);
> GtkTreeView* view=(GtkTreeView*)gtk_tree_view_new();
> gtk_tree_view_set_model(view,(GtkTreeModel*)store);
> GtkTreeViewColumn* column=gtk_tree_view_column_new();
> gtk_tree_view_append_column(view,column);
>
> //check get_visible_range, all is well
> GtkTreePath* sp;
> GtkTreePath* ep;
> gtk_tree_view_get_visible_range(view,&sp,&ep);
>
> //add one row
> GtkTreeIter iter;
> gtk_list_store_append(store,&iter);
> gtk_list_store_set(store,&iter,0,"foo",-1);
>
> //check again, bad things
> gtk_tree_view_get_visible_range(view,&sp,&ep);
> }
>
>
> The errors are:
>
> (a.out:5709): Gtk-CRITICAL **: _gtk_tree_view_find_path: assertion `node
> != NULL' failed
>
> (a.out:5709): Gtk-CRITICAL **: _gtk_tree_view_find_path: assertion `node
> != NULL' failed
>
> As I said before - in the full version everything seems to work as
> expected except for these errors.
What do you exactly expect from gtk_tree_view_get_visible_range()
when the tree view is not realized, has no size allocated,
etc. (beside a more helpful error message)? What is
*visible* then?
The first gtk_tree_view_get_visible_range() fails gracefully
(note it returns FALSE) simply because empty tree is
special-cased.
The errors disappear if you do for example
GtkWidget *window;
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
gtk_widget_show_all(window);
first.
Yeti
--
Anonyms eat their boogers.
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