Hola,
Voy a intentar explicarte mas o menos como hacerlo.
De todas formas al final te adjunto un ejemplo donde puedes hacer un copia pega en un programa Z y mirarlo mas con calma.
Para empezar... buscas donde defines...
CLASS lcl_event_receiver DEFINITION.
PUBLIC SECTION.
y añades...
METHODS handle_top_of_page
FOR EVENT top_of_page OF cl_gui_alv_grid
IMPORTING e_dyndoc_id.
En... CLASS lcl_event_receiver IMPLEMENTATION.
pones...
METHOD handle_top_of_page.
PERFORM event_top_of_page USING e_dyndoc_id.
ENDMETHOD. "top_of_page
Dentro del PERFORM es donde pintas tu cabecera... entiendo que esa parte la controlas.
Ahora viene lo mas importante... en el pbo_output vamos a partir nuestro contenedor en dos partes donde una la dejamos para la cabecera y la otra para el ALV.
Copio el ejemplo entero.
FORM pbo_output.
DATA: lo_splitter TYPE REF TO cl_gui_splitter_container.
DATA: lo_event_receiver TYPE REF TO lcl_event_receiver.
DATA: lt_it_toolbar_excluding TYPE ui_functions.
SET PF-STATUS 'MAIN100'.
SET TITLEBAR 'T9001_1'.
IF go_custom_container IS INITIAL.
CREATE OBJECT go_custom_container
EXPORTING
container_name = g_container_listado.
CREATE OBJECT go_dyndoc_id
EXPORTING
style = 'ALV_GRID'.
CREATE OBJECT lo_splitter
EXPORTING
parent = go_custom_container
rows = 2
columns = 1.
CALL METHOD lo_splitter->get_container
EXPORTING
row = 1
column = 1
RECEIVING
container = go_parent_top.
CALL METHOD lo_splitter->get_container
EXPORTING
row = 2
column = 1
RECEIVING
container = go_parent_grid.
CALL METHOD lo_splitter->set_row_height
EXPORTING
id = 1
height = 14.
CREATE OBJECT go_grid_listado
EXPORTING
i_parent = go_parent_grid.
************************
CREATE OBJECT lo_event_receiver.
SET HANDLER lo_event_receiver->handle_top_of_page
FOR go_grid_listado.
SET HANDLER lo_event_receiver->handle_data_changed
FOR go_grid_listado.
SET HANDLER lo_event_receiver->handle_data_changed_finished
FOR go_grid_listado.
SET HANDLER lo_event_receiver->on_hospot FOR go_grid_listado.
SET HANDLER lo_event_receiver->handle_user_command
FOR go_grid_listado.
SET HANDLER lo_event_receiver->handle_toolbar FOR go_grid_listado.
CALL METHOD go_grid_listado->register_edit_event
EXPORTING
i_event_id = cl_gui_alv_grid=>mc_evt_enter.
gs_layout-zebra = 'X'.
gs_layout-cwidth_opt = 'X'.
gs_layout-ctab_fname = 'COLOR_CELDAS'.
gs_layout-no_rowmark = 'X'.
gs_variant-report = sy-repid.
gs_variant-variant = p_vari.
CLEAR: gt_datos_tmp, gt_datos_tmp[].
gt_datos_tmp[] = gt_datos[].
CALL METHOD go_grid_listado->set_table_for_first_display
EXPORTING " i_buffer_active = 'X'
i_save = 'A'
is_variant = gs_variant
is_layout = gs_layout
it_toolbar_excluding = lt_it_toolbar_excluding
CHANGING
it_fieldcatalog = gt_fieldcat
it_sort = gt_sort
it_outtab = gt_datos[].
**********************
CALL METHOD go_dyndoc_id->initialize_document
EXPORTING
background_color = cl_dd_area=>col_textarea.
* Processing events
CALL METHOD go_grid_listado->list_processing_events
EXPORTING
i_event_name = 'TOP_OF_PAGE'
i_dyndoc_id = go_dyndoc_id.
ENDIF.
ENDFORM. " pbo_output
Y ahora... te dejo un programa para que te sirva de ejemplo, simplemente lo copias y pegas en un programa Z nuevo.
REPORT z_oo_alv_top_of_page MESSAGE-ID zz .
DATA: it_flight TYPE TABLE OF sflight.
DATA: ok_code LIKE sy-ucomm,
save_ok LIKE sy-ucomm.
DATA: g_container TYPE scrfname VALUE 'CONTROL',
o_dyndoc_id TYPE REF TO cl_dd_document,
o_splitter TYPE REF TO cl_gui_splitter_container,
o_parent_grid TYPE REF TO cl_gui_container,
o_parent_top TYPE REF TO cl_gui_container,
o_html_cntrl TYPE REF TO cl_gui_html_viewer.
*----------------------------------------------------------------------*
* CLASS LCL_EVENT_HANDLER DEFINITION
*----------------------------------------------------------------------*
*
*----------------------------------------------------------------------*
CLASS lcl_event_handler DEFINITION .
PUBLIC SECTION .
METHODS:
*Event Handler for Top of page
top_of_page FOR EVENT top_of_page
OF cl_gui_alv_grid
IMPORTING e_dyndoc_id.
ENDCLASS. "lcl_event_handler DEFINITION
*----------------------------------------------------------------------*
* CLASS LCL_EVENT_HANDLER IMPLEMENTATION
*----------------------------------------------------------------------*
*
*----------------------------------------------------------------------*
CLASS lcl_event_handler IMPLEMENTATION.
METHOD top_of_page.
* Top-of-page event
PERFORM event_top_of_page USING o_dyndoc_id.
ENDMETHOD. "top_of_page
ENDCLASS. "LCL_EVENT_HANDLER IMPLEMENTATION
DATA: g_custom_container TYPE REF TO cl_gui_custom_container,
g_handler TYPE REF TO lcl_event_handler. "handler
START-OF-SELECTION.
SELECT *
FROM sflight
UP TO 20 ROWS
INTO TABLE it_flight.
END-OF-SELECTION.
IF NOT it_flight[] IS INITIAL.
CALL SCREEN 100.
ELSE.
MESSAGE i002 WITH 'NO DATA FOR THE SELECTION'(004).
ENDIF.
*----------------------------------------------------------------------*
* MODULE STATUS_0100 OUTPUT
*----------------------------------------------------------------------*
*
*----------------------------------------------------------------------*
MODULE status_0100 OUTPUT.
SET PF-STATUS 'STATUS'.
SET TITLEBAR 'TITLE'.
IF g_custom_container IS INITIAL.
PERFORM create_and_init_alv.
ENDIF.
ENDMODULE. " STATUS_0100 OUTPUT
*----------------------------------------------------------------------*
* MODULE USER_COMMAND_0100 INPUT
*----------------------------------------------------------------------*
*
*----------------------------------------------------------------------*
MODULE user_command_0100 INPUT.
CASE sy-ucomm.
WHEN 'BACK'.
LEAVE TO SCREEN 0.
ENDCASE.
ENDMODULE. " USER_COMMAND_0100 INPUT
*&---------------------------------------------------------------------*
*& Form CREATE_AND_INIT_ALV
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
FORM create_and_init_alv .
DATA: g_grid TYPE REF TO cl_gui_alv_grid.
CREATE OBJECT g_custom_container
EXPORTING
container_name = g_container.
* Create TOP-Document
CREATE OBJECT o_dyndoc_id
EXPORTING
style = 'ALV_GRID'.
* Create Splitter for custom_container
CREATE OBJECT o_splitter
EXPORTING
parent = g_custom_container
rows = 2
columns = 1.
CALL METHOD o_splitter->get_container
EXPORTING
row = 1
column = 1
RECEIVING
container = o_parent_top.
CALL METHOD o_splitter->get_container
EXPORTING
row = 2
column = 1
RECEIVING
container = o_parent_grid.
* Set height for g_parent_html
CALL METHOD o_splitter->set_row_height
EXPORTING
id = 1
height = 5.
CREATE OBJECT g_grid
EXPORTING
i_parent = o_parent_grid.
CREATE OBJECT g_handler.
SET HANDLER g_handler->top_of_page FOR g_grid.
*Calling the Method for ALV output
CALL METHOD g_grid->set_table_for_first_display
EXPORTING
i_structure_name = 'SFLIGHT'
CHANGING
it_outtab = it_flight[].
CALL METHOD o_dyndoc_id->initialize_document
EXPORTING
background_color = cl_dd_area=>col_textarea.
* Processing events
CALL METHOD g_grid->list_processing_events
EXPORTING
i_event_name = 'TOP_OF_PAGE'
i_dyndoc_id = o_dyndoc_id.
ENDFORM. "CREATE_AND_INIT_ALV
*&---------------------------------------------------------------------*
*& Form EVENT_TOP_OF_PAGE
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* -->DG_DYNDOC_ID text
*----------------------------------------------------------------------*
FORM event_top_of_page USING dg_dyndoc_id TYPE REF TO
cl_dd_document.
DATA : dl_text(255) TYPE c. "Text
CALL METHOD dg_dyndoc_id->add_text
EXPORTING
text = 'Flight Details'
sap_style = cl_dd_area=>heading
sap_fontsize = cl_dd_area=>large
sap_color = cl_dd_area=>list_heading_int.
CALL METHOD dg_dyndoc_id->add_gap
EXPORTING
width = 200.
CALL METHOD o_dyndoc_id->add_picture
EXPORTING
picture_id = 'ENJOYSAP_LOGO'.
* Add new-line
CALL METHOD dg_dyndoc_id->new_line.
CALL METHOD dg_dyndoc_id->new_line.
CLEAR : dl_text.
* program ID
dl_text = 'Program Name :'.
CALL METHOD dg_dyndoc_id->add_gap.
CALL METHOD o_dyndoc_id->add_text
EXPORTING
text = dl_text
sap_emphasis = cl_dd_area=>heading
sap_color = cl_dd_area=>list_heading_int.
CLEAR dl_text.
dl_text = sy-repid.
CALL METHOD o_dyndoc_id->add_text
EXPORTING
text = dl_text
sap_emphasis = cl_dd_area=>heading
sap_color = cl_dd_area=>list_negative_inv.
* Add new-line
CALL METHOD dg_dyndoc_id->new_line.
CLEAR : dl_text.
CLEAR : dl_text.
* program ID
dl_text = 'User Name :'.
CALL METHOD dg_dyndoc_id->add_gap.
CALL METHOD o_dyndoc_id->add_text
EXPORTING
text = dl_text
sap_emphasis = cl_dd_area=>heading
sap_color = cl_dd_area=>list_heading_int.
CLEAR dl_text.
dl_text = sy-uname.
CALL METHOD o_dyndoc_id->add_text
EXPORTING
text = dl_text
sap_emphasis = cl_dd_area=>heading
sap_color = cl_dd_area=>list_negative_inv.
* Add new-line
CALL METHOD dg_dyndoc_id->new_line.
CLEAR : dl_text.
* Run Date
dl_text = 'Run Date :'.
CALL METHOD dg_dyndoc_id->add_gap.
CALL METHOD o_dyndoc_id->add_text
EXPORTING
text = dl_text
sap_emphasis = cl_dd_area=>heading
sap_color = cl_dd_area=>list_heading_int.
CLEAR dl_text.
* Move date
WRITE sy-datum TO dl_text.
CALL METHOD o_dyndoc_id->add_text
EXPORTING
text = dl_text
sap_emphasis = cl_dd_area=>heading
sap_color = cl_dd_area=>list_negative_inv.
* Add new-line
CALL METHOD dg_dyndoc_id->new_line.
CLEAR : dl_text.
*Time
dl_text = 'Time :'.
CALL METHOD dg_dyndoc_id->add_gap.
CALL METHOD o_dyndoc_id->add_text
EXPORTING
text = dl_text
sap_emphasis = cl_dd_area=>heading
sap_color = cl_dd_area=>list_heading_int.
CLEAR dl_text.
* Move time
WRITE sy-uzeit TO dl_text.
CALL METHOD o_dyndoc_id->add_text
EXPORTING
text = dl_text
sap_emphasis = cl_dd_area=>heading
sap_color = cl_dd_area=>list_negative_inv.
* Add new-line
CALL METHOD dg_dyndoc_id->new_line.
PERFORM display.
ENDFORM. " EVENT_TOP_OF_PAGE
*&---------------------------------------------------------------------*
*& Form DISPLAY
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
FORM display.
* Creating html control
IF o_html_cntrl IS INITIAL.
CREATE OBJECT o_html_cntrl
EXPORTING
parent = o_parent_top.
ENDIF.
CALL METHOD o_dyndoc_id->merge_document.
o_dyndoc_id->html_control = o_html_cntrl.
* Display document
CALL METHOD o_dyndoc_id->display_document
EXPORTING
reuse_control = 'X'
parent = o_parent_top
EXCEPTIONS
html_display_error = 1.
IF sy-subrc NE 0.
MESSAGE i999 WITH 'Error in displaying top-of-page'(036).
ENDIF.
ENDFORM. " display
Un saludo y espero que mas o menos te haya aclarado algo.
