example for tree view

hai guys,
i have a problem in creating a tree view in oracle forms 6i .
can u suggest me a detailed example of creating a tree view

thanks a lot guys

have a nice day
with regards
yejurvad

The Forms & Menus examples CD contains a form called NAVWIZ which has a hierarchical tree on it. I managed to build a form using this as a template.

BLOCK : BTREE - only for Tree item



TREE ITEM : TR ( populated with record group 'r_tree')



---------------------------------------------------------------

-- when-new-form-instance TRIGGER (for populate and open tree)

---------------------------------------------------------------



DECLARE

v_ignore NUMBER;

find_node ftree.NODE;

BEGIN

--

-- populate with query and tree item

--

Ftree.Set_Tree_Property('Tr', Ftree.RECORD_GROUP, 'r_tree');

v_ignore := Populate_Group('r_tree');

Ftree.Populate_Tree('Tr');

--

-- set selection on 1 row of tree

--

find_node := Ftree.Find_Tree_Node('tr', '', Ftree.FIND_NEXT_CHILD,

Ftree.NODE_LABEL, Ftree.ROOT_NODE, Ftree.ROOT_NODE);

Ftree.Set_tree_selection('Tr', find_node, Ftree.SELECT_ON);

--

:system.message_level:='10';

end;



---------------------------------------------------

-- r_tree - RECORD GROUP

---------------------------------------------------



select 1, level, NAME_ACCOUNT, NULL, REG_ACCOUNT

from DIC_ACCOUNTS

connect by prior rg_account = rg_root

start with rg_root is null

--

-- where 1 - open/close node in tree

-- level - level of tree (start with 1)

-- null - icon name

-- NAME_ACCOUNT - visual value

-- REG_ACCOUNT - node value

--

---------------------------------------------------------------

-- WHEN-TREE-NODE-SELECTED TRIGGER (for get value from tree)

---------------------------------------------------------------

DECLARE

cr_n FTREE.NODE;

BEGIN

cr_n := Ftree.Get_Tree_Selection('tr', 1);

:ct.reg_account := Ftree.Get_Tree_Node_Property('tr',

:SYSTEM.TRIGGER_NODE, Ftree.NODE_VALUE);

go_block('det_info');

execute_query;

go_block('btree');

END;





---------------------------------------------------------------

-- another example of record group

---------------------------------------------------------------



select decode(level, 1,1, -1),

level, NAME_PRODUCT,

decode(t_root,'R','rt_quer2','L','eqp_01','rt_quer2'),

REG_PRODUCT

from dic_product

connect by prior rg_product = rg_root

start with rg_root is null



COMMENT:



1. decode(level, 1,1, -1)

-- open only 1st level of tree

2. decode(t_root,'R','rt_quer2','L','eqp_01','rt_quer2'),

-- root nodes (icon name = 'rt_quer2')

-- lief nodes (icon name = 'eqp_01')

-- default (icon name = 'rt_quer2')



Good luck!