#define GTK_ENABLE_BROKEN #include /* for all the GtkItem:: and GtkTreeItem:: signals */ static void cb_itemsignal( GtkWidget *item, gchar *signame ) { gchar *name; GtkLabel *label; /* It's a Bin, so it has one child, which we know to be a label, so get that */ label = GTK_LABEL (GTK_BIN (item)->child); /* Get the text of the label */ gtk_label_get (label, &name); /* Get the level of the tree which the item is in */ g_print ("%s called for item %s->%p, level %d\n", signame, name, item, GTK_TREE (item->parent)->level); } /* Note that this is never called */ static void cb_unselect_child( GtkWidget *root_tree, GtkWidget *child, GtkWidget *subtree ) { g_print ("unselect_child called for root tree %p, subtree %p, child %p\n", root_tree, subtree, child); } /* Note that this is called every time the user clicks on an item, whether it is already selected or not. */ static void cb_select_child (GtkWidget *root_tree, GtkWidget *child, GtkWidget *subtree) { g_print ("select_child called for root tree %p, subtree %p, child %p\n", root_tree, subtree, child); } static void cb_selection_changed( GtkWidget *tree ) { GList *i; g_print ("selection_change called for tree %p\n", tree); g_print ("selected objects are:\n"); i = GTK_TREE_SELECTION_OLD(tree); while (i){ gchar *name; GtkLabel *label; GtkWidget *item; /* Get a GtkWidget pointer from the list node */ item = GTK_WIDGET (i->data); label = GTK_LABEL (GTK_BIN (item)->child); gtk_label_get (label, &name); g_print ("\t%s on level %d\n", name, GTK_TREE (item->parent)->level); i = i->next; } } int main( int argc, char *argv[] ) { GtkWidget *window, *scrolled_win, *tree; static gchar *itemnames[] = {"Foo", "Bar", "Baz", "Quux", "Maurice"}; gint i; gtk_init (&argc, &argv); /* a generic toplevel window */ window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_signal_connect (GTK_OBJECT(window), "delete_event", GTK_SIGNAL_FUNC (gtk_main_quit), NULL); gtk_container_set_border_width (GTK_CONTAINER(window), 5); /* A generic scrolled window */ scrolled_win = gtk_scrolled_window_new (NULL, NULL); gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_widget_set_size_request (scrolled_win, 150, 200); gtk_container_add (GTK_CONTAINER(window), scrolled_win); gtk_widget_show (scrolled_win); /* Create the root tree */ tree = gtk_tree_new(); g_print ("root tree is %p\n", tree); /* connect all GtkTree:: signals */ gtk_signal_connect (GTK_OBJECT(tree), "select_child", GTK_SIGNAL_FUNC(cb_select_child), tree); gtk_signal_connect (GTK_OBJECT(tree), "unselect_child", GTK_SIGNAL_FUNC(cb_unselect_child), tree); gtk_signal_connect (GTK_OBJECT(tree), "selection_changed", GTK_SIGNAL_FUNC(cb_selection_changed), tree); /* Add it to the scrolled window */ gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW(scrolled_win), tree); /* Set the selection mode */ gtk_tree_set_selection_mode (GTK_TREE(tree), GTK_SELECTION_MULTIPLE); /* Show it */ gtk_widget_show (tree); for (i = 0; i < 5; i++){ GtkWidget *subtree, *item; gint j; /* Create a tree item */ item = gtk_tree_item_new_with_label (itemnames[i]); /* Connect all GtkItem:: and GtkTreeItem:: signals */ gtk_signal_connect (GTK_OBJECT(item), "select", GTK_SIGNAL_FUNC(cb_itemsignal), "select"); gtk_signal_connect (GTK_OBJECT(item), "deselect", GTK_SIGNAL_FUNC(cb_itemsignal), "deselect"); gtk_signal_connect (GTK_OBJECT(item), "toggle", GTK_SIGNAL_FUNC(cb_itemsignal), "toggle"); gtk_signal_connect (GTK_OBJECT(item), "expand", GTK_SIGNAL_FUNC(cb_itemsignal), "expand"); gtk_signal_connect (GTK_OBJECT(item), "collapse", GTK_SIGNAL_FUNC(cb_itemsignal), "collapse"); /* Add it to the parent tree */ gtk_tree_append (GTK_TREE(tree), item); /* Show it - this can be done at any time */ gtk_widget_show (item); /* Create this item's subtree */ subtree = gtk_tree_new(); g_print ("-> item %s->%p, subtree %p\n", itemnames[i], item, subtree); /* This is still necessary if you want these signals to be called for the subtree's children. Note that selection_change will be signalled for the root tree regardless. */ gtk_signal_connect (GTK_OBJECT(subtree), "select_child", GTK_SIGNAL_FUNC(cb_select_child), subtree); gtk_signal_connect (GTK_OBJECT(subtree), "unselect_child", GTK_SIGNAL_FUNC(cb_unselect_child), subtree); /* This has absolutely no effect, because it is completely ignored in subtrees */ gtk_tree_set_selection_mode (GTK_TREE(subtree), GTK_SELECTION_SINGLE); /* Neither does this, but for a rather different reason - the view_mode and view_line values of a tree are propagated to subtrees when they are mapped. So, setting it later on would actually have a (somewhat unpredictable) effect */ gtk_tree_set_view_mode (GTK_TREE(subtree), GTK_TREE_VIEW_ITEM); /* Set this item's subtree - note that you cannot do this until AFTER the item has been added to its parent tree! */ gtk_tree_item_set_subtree (GTK_TREE_ITEM(item), subtree); for (j = 0; j < 5; j++){ GtkWidget *subitem; /* Create a subtree item, in much the same way */ subitem = gtk_tree_item_new_with_label (itemnames[j]); /* Connect all GtkItem:: and GtkTreeItem:: signals */ gtk_signal_connect (GTK_OBJECT(subitem), "select", GTK_SIGNAL_FUNC(cb_itemsignal), "select"); gtk_signal_connect (GTK_OBJECT(subitem), "deselect", GTK_SIGNAL_FUNC(cb_itemsignal), "deselect"); gtk_signal_connect (GTK_OBJECT(subitem), "toggle", GTK_SIGNAL_FUNC(cb_itemsignal), "toggle"); gtk_signal_connect (GTK_OBJECT(subitem), "expand", GTK_SIGNAL_FUNC(cb_itemsignal), "expand"); gtk_signal_connect (GTK_OBJECT(subitem), "collapse", GTK_SIGNAL_FUNC(cb_itemsignal), "collapse"); g_print ("-> -> item %s->%p\n", itemnames[j], subitem); /* Add it to its parent tree */ gtk_tree_append (GTK_TREE(subtree), subitem); /* Show it */ gtk_widget_show (subitem); } } /* Show the window and loop endlessly */ gtk_widget_show (window); gtk_main(); return 0; }