User command event is not working ........

Question

Hi ,
class event_class definition.
  public section.
    methods:
       handle_user_command
           for event after_user_command of cl_gui_alv_grid
               importing e_ucomm.
    methods:handle_hotspot
      for event  hotspot_click of cl_gui_alv_grid
           importing e_row_id.
endclass.                    "event_class DEFINITION
******selection screen**************************
call screen 100.
      CLASS event_class IMPLEMENTATION
********class implimentations********************
class event_class implementation.
  method handle_user_command.
    case e_ucomm.
      when 'SAVE'.
   wa_default-checkbox = 'X'.
ENDCASE.
  endmethod.            "handle_user_command
  method  handle_hotspot.
    wa_default-checkbox = 'X'.
    lv_layout-zebra = 'X'.
    lv_hotspot = lv_hotspot + 1.
    modify       lit_default
    index        e_row_id
    from         wa_default
    transporting checkbox.
    lv_id = e_row_id.
*************refreshing tables************
    call method wa_alv->refresh_table_display
     EXPORTING
       is_stable      =
       i_soft_refresh =
     EXCEPTIONS
       finished       = 1
       others         = 2
    if sy-subrc <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
               WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    endif.
  endmethod.       
            "handle_user_command
method user_command.
*****some code i will write with help of e_ucomm**********(   control not comming here)
endmethod.
endclass.  
Hi,Here i have one alv grid display if i click on grid checkbox method (hotspot) will triggers properly,,,,but if i select any button like save ,modify i have created on screen method user_command is not triggering ,control is going to pai of that screen.my question is it shold trigger usr_command right??????
any help appriciated.
Thanks

Answer 1

Hi, Lingaraj.
Check your events handlers is registered
SET HANDLER go_event_receiver->handle_double_click FOR go_grid.
SET HANDLER go_event_receiver->handle_toolbar      FOR go_grid.
SET HANDLER go_event_receiver->handle_user_command FOR go_grid.
SET HANDLER go_event_receiver->handle_menu_button  FOR go_grid.
SET HANDLER go_event_receiver->handle_context_menu FOR go_grid.
SET HANDLER go_event_receiver->on_f4               FOR go_grid.
SET HANDLER go_event_receiver->handle_data_changed FOR go_grid.
before calling an ALV:
go_grid->set_table_for_first_display(
     EXPORTING  is_layout        = ls_layout
                is_variant       = ls_variant
                i_save           = 'A'
      CHANGING  it_outtab        = gt_outtab
                it_fieldcatalog  = lt_fieldcat
Hope it will be helpful for you.
Best regards,
George Shlyahov.