Folder Icon in Trees

Question

I'm using Forms 6i and need to use Hierarchial trees. I've never worked on tree items. I have somehow populated data to the tree but my problem now is i'm not able to display a folder icon for the nodes. I would be very grateful if someone could explain me from the basics, of how to show a folder icon in the nodes, also the icon should be different when a node is expanded ie. folder to be opened when node expanded and closed when node collapsed.

Answer 1

Anitha,
the initial icon can be set when creating the tree. There are two ways to create a tree, one to use a query and another to use a record group.
To set icons due to a user action (e.g. a node selection):
DECLARE
htree ITEM;
current_node FTREE.NODE; 
find_node FTREE.NODE; 
BEGIN
-- Find the tree itself. 
htree := FIND_ITEM('tree_block.htree3');   
-- Change the icon of the clicked node.  The icon name
-- is "Open"
FTREE.SET_TREE_NODE_PROPERTY(htree, :SYSTEM.TRIGGER_NODE, Ftree.NODE_ICON, 'Open'); 
If you running in client/server, the icons need to be in the directory specified by the UI_ICONS registry variable. On the Web the icons must be in a gif format and in the same directory or archive you use for the iconic buttons
see: http://otn.oracle.com/products/forms/pdf/webicons.pdf
Frank
Frank
END;