How we know the selected node in a Tree object in a form?

Question

In a TREE object in forms, how can we know the current selected node by clicking a push button.
lets say , there are 10 nodes in my tree, and 5th one i selected. But i want to store the selected node in a variable, when i click a button.
please help
thanks

Answer 1

Hello
I've just notice what might be a bug in Oracle forms because when I have the when-tree-node-selected trigger present for the tree (It does not matter if it executes null or some code), the code in option 1 works fine on a when-button-pressed trigger on a button item. This is what I had done to give you a reply.
My second option will work because you're populating a parameter with when-tree-node-selected trigger which is then readable form anywhere else in the form. All you add is a check on when-button-pressed. Also for bug handling you need to consider setting the value to null when deselecting. I have this option working currently in one of my applications.
DECLARE
     num_selected NUMBER;
     htree ITEM;
curren_node FTREE.NODE;
BEGIN
htree := find_item('tree.form_list');
num_selected := ftree.get_tree_property(htree,ftree.selection_count);
for j in 1..num_selected
LOOP
curren_node := ftree.get_tree_selection(htree,j);
message('hello :'||ftree.Get_Tree_Node_Property(htree,curren_node,ftree.node_value),acknowledge);
end loop;
END;     
cheers
Q