Re: Strange Gtk::TreeStore behaviour
- From: Ramashish Baranwal <ramashish lists gmail com>
- To: Marco Scholten <mscholtn xs4all nl>
- Cc: gtkmm-list gnome org
- Subject: Re: Strange Gtk::TreeStore behaviour
- Date: Sun, 18 Sep 2005 14:18:37 +0530
That works.. But still I find the behavior strange. After all, if in
signal_row_expanded I don't delete the children but simply add some,
those do get reflected in the UI.
On 9/17/05, Marco Scholten <mscholtn xs4all nl> wrote:
> > Hi,
> > I am encountering an unexpected behavior in Gtk::TreeStore. I am
> > connecting a handler to signal_row_expanded to refresh the row
> > contents. To do this, I am simply removing the old contents and adding
> > children again. But when I expand the row in GUI, it doesn't get
> > expanded at all to show the children!
> What's happening here is that the row is expanded before on_row_expanded is
> executed, you then remove the expanded children and add new ones, those new
> children don't get expanded again.
> You can observe this behaviour by changing on_row_expanded to:
> void ExampleWindow::on_row_expanded(const Gtk::TreeModel::iterator & iter,
> const Gtk::TreeModel::Path & path)
> std::cout << "on_row_expanded" << std::endl;
> while(Gtk::Main::events_pending()) Gtk::Main::iteration();
> char a;
> std::cin >> a;
> std::cout << "removing children" << std::endl;
> std::cout << "adding children" << std::endl;
> Fix it by connecting to signal_test_expand_row (this signal is emitted
> before the row is expanded) and then return false from your signal handler.
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