Can a Method listen to more than one event in ABAP OO ?

Hi,
is it possible to prepare/register a handler method for e.g two events of two different classes ?
Or can a method generally listen to only one event ?
It seems that the syntax allows only one event ?
methods event_handler for event my_event of my_class.
Thanks for help in advance
Olaf

An event can refer to more than one object but you have to instantiate the objects
for example   I have 2 grids and want to handle events depending on which grid
the user is selecting / requesting actions on. (I've just posted the relevant bits coded here as data extraction etc you can code normally).
FORM instantiate_grid
* Create Grid container
* Instantiate Grid class
* Instantiate Event Handler class
* Display the Grid
   USING grid_container TYPE REF TO cl_gui_custom_container
          class_object TYPE REF TO cl_gui_alv_grid
          container_name TYPE scrfname.
* create the container
CREATE OBJECT grid_container
EXPORTING container_name = container_name.
* Create the ALV grid object using
* container just created
CREATE OBJECT class_object
EXPORTING
     i_parent = grid_container.
* Exclude the SUM function from the GRID toolbar
ls_exclude = cl_gui_alv_grid=>mc_fc_sum.
APPEND ls_exclude TO lt_exclude.
* Instantiate our handler class
* lcl_event_handler
CALL METHOD class_object->register_edit_event
    EXPORTING
      i_event_id = cl_gui_alv_grid=>mc_evt_enter.
CREATE OBJECT g_handler.
SET HANDLER g_handler->handle_double_click FOR class_object.
SET HANDLER g_handler->handle_hotspot_click FOR class_object.
SET HANDLER g_handler->handle_toolbar FOR class_object.
SET HANDLER g_handler->handle_user_command FOR class_object.
SET HANDLER g_handler->handle_data_changed FOR class_object.
SET HANDLER g_handler->handle_data_changed_finished FOR class_object.
ENDFORM.                    "instantiate_grid
MODULE status_0100 OUTPUT.
IF grid_container IS INITIAL.
    PERFORM instantiate_grid
       USING grid_container
             grid1
             'CCONTAINER1'.
* Grid title Primary Grid
    struct_grid_lset-grid_title = 'Delimit Old org Units - Selection'.
    struct_grid_lset-edit = 'X'.
    struct_grid_lset-sel_mode = 'D'.
    PERFORM display_grid
     USING
        grid1
         <dyn_table>
         it_fldcat.
ENDIF.
SET PF-STATUS '001'.
SET TITLEBAR '000' WITH 'Delimit Old Org Units'.
ENDMODULE.                    "status_0100 OUTPUT
* PAI module
MODULE user_command_0100 INPUT.
CASE sy-ucomm.
    WHEN 'BACK'.
      LEAVE PROGRAM.
    WHEN 'EXIT'.
      LEAVE PROGRAM.
    WHEN 'CANC'.
      LEAVE PROGRAM.
    WHEN 'RETURN'.
      LEAVE PROGRAM.
ENDCASE.
ENDMODULE.                    "user_command_0100 INPUT
MODULE status_0200 OUTPUT.
IF grid_container1 IS INITIAL.
    PERFORM instantiate_grid
       USING grid_container1
             grid2
             'CCONTAINER2'.
* Grid title secondary grid
    struct_grid_lset-grid_title = 'Delimited Objects'.
    struct_grid_lset-edit = ' '.
    PERFORM display_grid
     USING
        grid2
         <dyn_table1>
         it_fldcat1.
SET PF-STATUS '001'.
SET TITLEBAR '000' WITH 'Org Units Delimited'.
endif.
ENDMODULE.                    "status_0200 OUTPUT
In your local event handling class use the variable SENDER to determine which grid / object triggered the event
for example
CLASS lcl_event_handler DEFINITION .
PUBLIC SECTION .
    METHODS:
**Hot spot Handler
    handle_hotspot_click FOR EVENT hotspot_click OF cl_gui_alv_grid
                      IMPORTING e_row_id e_column_id es_row_no,
**Double Click Handler
    handle_double_click FOR EVENT double_click OF cl_gui_alv_grid
                                    IMPORTING e_row e_column es_row_no
                                    sender,
** Toolbar handler.
handle_toolbar
        FOR EVENT toolbar OF cl_gui_alv_grid
            IMPORTING e_object e_interactive
            sender,
* button press
    handle_user_command
        FOR EVENT user_command OF cl_gui_alv_grid
            IMPORTING e_ucomm
             sender,
* data changed
handle_data_changed
    FOR EVENT data_changed OF cl_gui_alv_grid
      IMPORTING er_data_changed,
*data changed finished
handle_data_changed_finished
     FOR EVENT data_changed OF cl_gui_alv_grid,
download_to_excel.
ENDCLASS.                    "lcl_event_handler DEFINITION
* Implementation methods for lcl_event_handler
CLASS lcl_event_handler IMPLEMENTATION.
*Handle Hotspot Click
* When a "hotspotted"cell is double clicked
* Hotspot indicatore needs to be set in
* the field catalog.
* Not required for this application.
METHOD handle_hotspot_click .
    PERFORM mouse_click
      USING e_row_id
            e_column_id.
    CALL METHOD grid1->get_current_cell
      IMPORTING
        e_row     = ls_row
        e_value   = ls_value
        e_col     = ls_col
        es_row_id = ls_row_id
        es_col_id = ls_col_id
        es_row_no = es_row_no.
    CALL METHOD grid1->refresh_table_display.
    CALL METHOD grid1->set_current_cell_via_id
      EXPORTING
        is_column_id = e_column_id
        is_row_no    = es_row_no.
ENDMETHOD.                    "lcl_event_handler
*Handle Double Click
METHOD handle_double_click.
    CASE sender.
      WHEN grid1.
* returns cell double clicked FROM GRID 1
* Ignore any event from GRID 2
        PERFORM double_click
           USING e_row
           e_column.
    ENDCASE.
ENDMETHOD.                    "handle_double_click
* Add our buttons to standard toolbar
METHOD handle_toolbar.
    CASE sender.
* Only add functionality to PRIMARY GRID (GRID 1)
      WHEN grid1.
* append a separator to normal toolbar
        CLEAR ls_toolbar.
        MOVE 3 TO ls_toolbar-butn_type.
        APPEND ls_toolbar TO e_object->mt_toolbar.
* Delimit Org
        CLEAR ls_toolbar.
        MOVE 'PROC' TO ls_toolbar-function.
        MOVE icon_railway TO ls_toolbar-icon.
        MOVE 'DELIMIT' TO ls_toolbar-quickinfo.
        MOVE 'DELIMIT ORG UNIT' TO ls_toolbar-text.
        MOVE ' ' TO ls_toolbar-disabled.
        APPEND ls_toolbar TO e_object->mt_toolbar.
* Select All Rows
        MOVE 'SELE' TO ls_toolbar-function.
        MOVE icon_select_all TO ls_toolbar-icon.
        MOVE 'ALL CELLS' TO ls_toolbar-quickinfo.
        MOVE 'ALL CELLS' TO ls_toolbar-text.
        MOVE ' ' TO ls_toolbar-disabled.
        APPEND ls_toolbar TO e_object->mt_toolbar.
* Deselect all Rows.
        MOVE 'DSEL' TO ls_toolbar-function.
        MOVE icon_deselect_all TO ls_toolbar-icon.
        MOVE 'DESELECT ALL' TO ls_toolbar-quickinfo.
        MOVE 'DESELECT ALL' TO ls_toolbar-text.
        MOVE ' ' TO ls_toolbar-disabled.
        APPEND ls_toolbar TO e_object->mt_toolbar.
        ENDCASE.
     move 0 to ls_toolbar-butn_type.
     move 'EXCEL' to ls_toolbar-function.
     move space to ls_toolbar-disabled.
     move icon_xxl to ls_toolbar-icon.
     move 'Excel' to ls_toolbar-quickinfo.
     move 'EXCEL' to ls_toolbar-text.
     append ls_toolbar to e_object->mt_toolbar.
ENDMETHOD.                    "handle_toolbar
METHOD handle_user_command.
* Entered when a user presses a Grid toolbar
* standard toolbar functions processed
* normally
   g_sender = sender.
    CASE e_ucomm.
      WHEN 'PROC'.    "Process selected data
        PERFORM get_selected_rows.
      WHEN 'SELE'.
        PERFORM select_all_rows.
      WHEN 'DSEL'.
        PERFORM deselect_all_rows.
      WHEN 'EXCEL'.
          call method me->download_to_excel.
        WHEN OTHERS.
    ENDCASE.
ENDMETHOD.                    "handle_user_command
METHOD handle_data_changed.
* only entered on data change Not req for ths app.
    PERFORM data_changed USING er_data_changed.
ENDMETHOD.                    "data_changed
METHOD handle_data_changed_finished.
* only entered on data change finished Not req for ths app.
    PERFORM data_changed_finished.
ENDMETHOD.                    "data_changed_finished
* Interactive download to excel
method download_to_excel.
field-symbols:
   <qs0>   type standard table,
   <qs1>   type standard table.
data: G_OUTTAB1 type ref to data,
        g_fldcat1 type ref to data,
        LS_LAYOUT type KKBLO_LAYOUT,
        LT_FIELDCAT type KKBLO_T_FIELDCAT,
        LT_FIELDCAT_WA type KKBLO_FIELDCAT,
        L_TABNAME type SLIS_TABNAME.
case g_sender.
when grid1.
     get reference of <dyn_table> into g_outtab1.
     get reference of it_fldcat into g_fldcat1.
   when grid2.
   get reference of <dyn_table1> into g_outtab1.
     get reference of it_fldcat1 into g_fldcat1.
endcase.
   assign g_outtab1->* to <qs0>.
    assign g_fldcat1->* to <qs1>.
       call function 'LVC_TRANSFER_TO_KKBLO'
      exporting
        it_fieldcat_lvc   = <qs1>
*     is_layout_lvc     = m_cl_variant->ms_layout
         is_tech_complete = ' '
      importing
        es_layout_kkblo   = ls_layout
        et_fieldcat_kkblo = lt_fieldcat.
    loop at lt_fieldcat into lt_fieldcat_wa.
      clear lt_fieldcat_wa-tech_complete.
      if lt_fieldcat_wa-tabname is initial.
        lt_fieldcat_wa-tabname = '1'.
        modify lt_fieldcat from lt_fieldcat_wa.
      endif.
      l_tabname = lt_fieldcat_wa-tabname.
    endloop.
    call function 'ALV_XXL_CALL'
         exporting
              i_tabname           = l_tabname
              is_layout           = ls_layout
              it_fieldcat         = lt_fieldcat
              i_title             = sy-title
         tables
              it_outtab           = <qs0>
         exceptions
              fatal_error         = 1
              no_display_possible = 2
              others              = 3.
    if sy-subrc <> 0.
      message id sy-msgid type 'S' number sy-msgno
             with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
    endif.
endmethod.
ENDCLASS.                    "lcl_event_handler IMPLEMENTATION
The sender instance is a variable such as g_sender type ref to cl_gui_alv_grid.       "Sender instance.
The above example is for OO ALV grids but should work for other interactive cases where a User presses a key or does a mouse action.
Cheers
jimbo

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