Problem in function module for expand in tree display

Question

hi all,
i have found a function module which can expand all nodes of the tree.
it is TREEV_EXPAND_ROOT_NODES.
CALL FUNCTION 'TREEV_EXPAND_ROOT_NODES' "Expands all Root Nodes
  EXPORTING
    handle =                    " cntl_handle   Handle for Tree Control
    level_count =               " i             Number of Levels to be Expanded
    expand_all_children =       " c
  no_flush =                  " c
  EXCEPTIONS
    FAILED = 1                  "               General Error
    ILLEGAL_LEVEL_COUNT = 2    . "               LEVEL_COUNT Must Be GE 0
for above function call what value should i give for "handle parameter".
thanks.

Answer 1

Hi,
Please pass the value as below with minor changes as per your requirement.
DATA: tree TYPE cntl_handle, 
DATA: TREE_HANDLE TYPE CNTL_HANDLE.
data: local_rep like sy-repid,
local_scr like sy-dynnr.
constants: dynpro_default       type i value -1.
data: node_table type node_table_type,
constants : TREEV_NODE_SEL_MODE_SINGLE TYPE I VALUE 0,
  call function 'TREEV_CREATE_SIMPLE_TREE'
       exporting
            owner_repid                    = local_rep
            dynnr                          = local_scr
            left                           = 0
            top                            = 0
            width                          = 45
            height                         = 22
            no_flush                       = space
            shellstyle                     = style
            parentid                       = dynpro_default
            node_selection_mode            = treev_node_sel_mode_single
            node_table_structure_name      = 'MTREESNODE'
       tables
            node_table                     = node_table
       changing
            handle                         = tree_handle
       exceptions
            create_error                   = 1
            tree_control_not_existing      = 2
            cntl_system_error              = 3
            failed                         = 4
            illegal_node_selection_mode    = 5
            missing_node_structure_name    = 6
            error_in_node_table            = 7
            dp_error                       = 8
            illegal_owner_repid            = 9
            table_structure_name_not_found = 10
            others                         = 11.
  if sy-subrc <> 0.
    message e645 with text-745 sy-subrc.
  endif.
call function 'TREEV_EXPAND_ROOT_NODES'
       exporting
            handle              = tree_handle
            level_count         = 2
            expand_all_children = 'X'
            no_flush            = ' '
       exceptions
            failed              = 1
            illegal_level_count = 2
            cntl_system_error   = 3
            others              = 4.
  if sy-subrc <> 0.
    message e645 with text-743 sy-subrc.
  endif.
If it is helpfull means reward me with some points.
Regards
Chitra