Re: CTree questions

[Angelo Cano <acano systec com>]

On Mon, Dec 04, 2000 at 12:42:03AM -0800, learfox furry ao net wrote:
> (I'm having mail problems, I'm resending this just incase it didn't get
> through.)
>
> ---------- Forwarded message ----------
> Date: Sun, 3 Dec 2000 22:33:01 -0800 (PST)
> From: learfox furry ao net
> To: GTK Application Development List <gtk-app-devel-list gnome org>
> Subject: CTree questions
>
>    I'm trying to learn how to use the GtkCTree and I've come across
> some questions that don't seem to be apparent from reading the header
> file.
>
> How would I add row data to a newly added GtkCTreeNode?
>
> How would I be notified when the GtkCTreeNode is destroyed so I can
> deallocate the row data?
>
> How can I delete all GtkCTreeNodes in the GtkCTree?
>
> How do I add the first GtkCTreeNode since I can't give it a parent or
> sibling since there arn't any?
>
>
>   Thanks in advance! :)
[snip]

I never use GtkCTree so I'm not too sure about this...

#include <gtk/gtk.h>

void cnode_destroy_notify_cb (gpointer data)
{
        g_print ("cnode destroyed\n");
}

gint destroy_ctree_nodes (GtkWidget *button, gpointer data)
{
        /* > How can I delete all GtkCTreeNodes in the GtkCTree? */
        gtk_clist_clear (GTK_CLIST (data));

        return FALSE;
}

int main (int argc, char *argv[])
{
        GtkWidget *window, *vbox, *ctree, *button;
        GtkCTreeNode *cnode;
        gchar *ctree_titles[] = { "I", "II" };
        gchar *ctree_data[] =  { "Column One data", "Column Two data" };

        gtk_init (&argc, &argv);

        window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
        gtk_widget_set_usize (window, 200, 200);
        gtk_signal_connect (GTK_OBJECT (window), 
                            "destroy",
                            GTK_SIGNAL_FUNC (gtk_main_quit), 
                            NULL);
        
        vbox = gtk_vbox_new (FALSE, 0);
        gtk_container_add (GTK_CONTAINER (window), vbox);

        ctree = gtk_ctree_new_with_titles (2, 0, ctree_titles);
        gtk_clist_set_column_width (GTK_CLIST (ctree), 0, 50);
        gtk_clist_set_column_width (GTK_CLIST (ctree), 1, 50);
        gtk_box_pack_start (GTK_BOX (vbox), ctree, TRUE, TRUE, 0);
        
        /* > How do I add the first GtkCTreeNode since I can't give it a parent 
         *   or sibling since there arn't any?
         */
        cnode = gtk_ctree_insert_node (GTK_CTREE (ctree), 
                                       NULL, 
                                       NULL, 
                                       ctree_data, 
                                       10,
                                       NULL, NULL,
                                       NULL, NULL,
                                       FALSE, 
                                       TRUE);
        /* > How would I add row data to a newly added GtkCTreeNode?
         *
         * > How would I be notified when the GtkCTreeNode is destroyed so I 
         *   can deallocate the row data?
         */
        gtk_ctree_node_set_row_data_full (GTK_CTREE (ctree),
                                          cnode,
                                          NULL,
                                          cnode_destroy_notify_cb);

        button = gtk_button_new_with_label ("destroy ctree nodes?");
        gtk_signal_connect (GTK_OBJECT (button),
                            "clicked",
                            GTK_SIGNAL_FUNC (destroy_ctree_nodes),
                            ctree);
        gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);

        gtk_widget_show_all (window);
        gtk_main ();
        return 0;
}