cl_gui_alv_tree icons der nodes ändern

Code: Alles auswählen.

  DATA: w_node_text    TYPE lvc_value,
        wa_mast        TYPE edidc,
        w_icon         TYPE string,
        t_item_layout  TYPE lvc_t_layi,
        t_item_lay     TYPE lvc_s_layi.

  t_item_lay-fieldname = tree->c_hierarchy_column_name.
  t_item_lay-style     = cl_gui_column_tree=>style_intensified.
  APPEND t_item_lay   TO t_item_layout.

  w_node_text = 'Knotentext'.
  w_icon      = '@3P@'.

  DATA: relat TYPE int4.
  relat = cl_gui_column_tree=>relat_last_child.

  DATA: w_node TYPE lvc_s_layn.
  w_node-n_image   = w_icon.
  w_node-exp_image = w_icon.

  "Knoten hinzufügen
  CALL METHOD tree->add_node
    EXPORTING
      i_relat_node_key = ''
      i_relationship   = relat
      i_node_text      = w_node_text
      is_outtab_line   = wa_mast
      is_node_layout   = w_node
      it_item_layout   = t_item_layout
    IMPORTING
      e_new_node_key   = w_head_key.

  MOVE w_head_key TO wa_head_keys-node_key.
  APPEND wa_head_keys TO t_head_keys.
  CLEAR wa_head_keys.